Upgrade to remove ads
Terms in this set (223)
Which of the following would best describe heat?
Heat is the energy that flows between two substances due to their difference in temperature
What happens to the density of a gas as the gas is compressed into a smaller volume?
The density of the gas increases
How would you describe the volume of the following object?
The amount of water in a swimming pool
The value of 300 Joules could be a measure of
Which of the following would not be considered matter?
Which of the following is generally true regarding the relationships of the density of an object and its mass?
A denser object does not necessarily have more mass
At room temperature, the phase in which atoms and molecules don't move (or vibrate) at all is
not the liquid, gas, or solid phase
Which of the following temperatures is not possible?
Which would you rather have: a decigram or a kilogram of gold?
A kilogram of gold because this is 10,000 times as much as a decigram of gold
How many calories (little c) are there in a snack cake containing 340 Calories (big C)?
Gas particles travel at speeds of up to 500 meters per second. Why, then, does it take so long for gas molecules to travel the length of a room?
Gas particles bump into each other as well as other particles in the air
Which of the following represents the Smallest quantity of mass?
b. 50 milligrams
c. 50 grams
d. 12 kilograms
Which of the following is not a measurement of volume?
a.10.0 cubic centimeters
d. 5.5 cubic milligrams
5.5 cubic milligrams
Which of the following best describes a liquid?
a constant volume but its shape is not defined
Is chemistry the study of submicroscopic, the microscopic, or the macroscopic?
Can an object have mass without having weight? can it have weight without having mass?
What determines the direction of heat flow?
Heat always flows from a higher-temperature substance into a lower-temperature substance
If all of the above images represents the same substance, which has the highest temperature?
the one where the molecules are the most spread out
What type of phase change is the figure going through when it goes from tightly packed particles to more spread out particles?
What is the relationship between mass and weight?
Weight is the effect of gravity on mass
What is temperature a measure of?
The average kinetic energy of the submicroscopic particles of a material and how hot or cold something is
A piece of aluminum weighing 10 grams has a volume of 3.7 mL. What is the density of the metal sample?
What type of change is it when the mediumly tight molecules become as spread out as possible
that is liquid----> gas, which is EVAPORATION
Does a 2 kg solid iron brick have twice as much mass as a 1 kg solid block of wood? Twice as much volume?
The iron brick has twice the mass, but its volume compared to the block of wood depends on the density of the wood
If the density of a block of ice is 0.92 g/mL what is the volume of 100 g of ice?
D= .92 g/mL
.92 g/mL= 100g/ V
V= 109 mL
If one meter is equal to 39.4 inches, and 12 inches equal one foot, how many feet are in 4.7 meters?
39.4 inches/1 x 1 ft/12 inches
1/3.28 x 1/4.7= 15.416 feet
Which of the following is an example of a physical change?
a. wood being converted into ash
b.Iron metal reacting with oxygen to form rust
c.Water being broken down into hydrogen and oxygen
d.Water cooling and being converted to ice
e.a candy bar being digested by a student
Water cooling and being converted to ice
What is the difference between a compound and a mixture?
a mixture can be physically separated into its components; a compound cannot be physically separated into its components
Why can't the elements of a compound be separated form one another by physical means?
Their atoms are too tightly bound together
Which of the following would be considered a chemical property?
d. melting temperature
e. boiling temperature
Which of the following elements are in the same group as silicon (Si)
What is the name of the following compound, SF3?
Which of the following is a mixture?
c. sea water
Strontium, Sr, is especially dangerous to humans because it tends to accumulate in calcium-dependent bone marrow tissues (calcium, Ca, number 20). This fact relates to the organization of the periodic table in that strontium and calcium are both
in group 2 of the periodic table
The element silicon has a melting point of 1,410 C and a boiling point of 2,355 C. It is a weak conductor of electricity, its density is 2.3 grams per cubic centimeter and it easily forms silicon dioxide when exposed to air. Which of the following is a chemical property of silicon?
a. its ability to conduct electricity
b. its density
c. its melting point
d. its ability to react with oxygen
its ability to react with oxygen
Which of these is not a metal?
Oxygen atoms are used to make water molecules. Does this mean that oxygen, O2, and water, H2O, have similar properties
no, compounds are uniquely different from the elements from which they're made
If you eat metallic sodium or inhale chlorine gas, you stand a strong chance of dying. Let these two elements react with each other, however, and you can safely sprinkle the compound on your popcorn for better taste. What is going on.
Sodium chloride has nothing in common with sodium and chlorine
Which of the following boxes represents a mixture?
The one where the two different elements are not combined
How would you classify Coco-Cola
Which of the following boxes represents a compound?
The one where the two different elements are joined
What are metalloids?
Elements that have some properties like metals and some like nonmetals
Which of the following is a pure substance?
a. tap water
b. orange juice
c. ice cream
d. stainless steel
How would you classify stainless steel?
Which of the following is not the name of a chemical group in the periodic table?
a. noble gases
b. alkali metals
c. alkaline-earth metals
d. heavy metals
If you have three molecules of MnO2, how many oxygen atoms would you have total?
the repeating trends or patterns that take place when examining the elements are called
a frying pan is lined with a thin layer of cooking oil followed by a layer of unpopped popcorn kernes. Upon heating the kernels all pop thereby escaping the pan. Which of the following physical and/or chemical changes occurred?
The starches within the kernels are cooked by the high temperatures (chemical change)
The water within each kernel is heated to the point that it would turn into water vapor as the kernels popped (physical change)
When blue food coloring is dissolved in water, the result is a
homogeneous mixture called a solution
What is the name of PO2?
Which statement best describes Aristotle's belief about matter?
Matter is composed of four different fundamental qualities which give rise to the elements: earth, air, fire, and water
Which of the following statements best describes the Law of Conservation of Mass?
The mass of al the products will be the same as the mass of all the reactants
You place a shiny aluminum that weighs exactly 1 gram into a container and seal it. The weight of the container and its contents is exactly 10g. You allow it to sit for a week and then reweigh the container. After one week the weight of the container and its contents is still 10g. The mass of the sample inside is now 1.5 g. What is the best explanation for this observation?
The aluminum reacted with some of the air inside the sealed container because the overall mass did not change.
Which of the following oxygen:hydrogen mass ratios is the same as the mass ratio found in water (8 g oxygen for every 1 g hydrogen)
32 g oxygen for every 4 g hydrogen
Which of the following statements from Dalton's atomic theory would best describe the following observation: The mass of all the products is equal to the mass of all the reactants in a given reaction.
Atoms can be neither created nor destroyed in a chemical reaction
Which of the following statements from Dalton's atomic theory would best describe the following observation: one kilogram of gold from Africa looks, feels, and behaves just like one pound of gold from South Dakota, US.
All atoms of a given element are identical
Which of the following statements from Dalton's atomic theory would best describe the following observation: The reaction of 2 liters of hydrogen gas with 1 liter of oxygen gas produce 2 liters of water vapor
Atoms combine chemically in definite whole number rations to form compounds
What is a diatomic molecule?
a molecule that is composed of 2 atoms
Which of the following elements is diatomic in its natural state?
Which of the following elements is not a diatomic molecule in its natural state?
Which of the following scientists would be considered the father of the periodic table?
Which of the following experiments helped to determine that most of an atom is actually empty space except for a very small positive core?
E. Rutherford's gold foil experiments
Which of the following experiments helped to determine the numeric value for the charge of an electron and its mass
R. Millikan's oil drop experiments
Which of the following images would most accurately represent the relative size of the nucleus compared to the rest of the atom?
the one where the atom is huge and the little dot in the middle is the nucleus
The following statement describes which subatomic particle best? It is electrically charged
a. an electron
b. a proton
c. a neutron
d. A and B
e. B and C
both an electron and a prton
the following statement describes which subatomic particle best? It is located outside of (away from) the nucleus.
Which of the following statements describes an isotope?
element with the same number of protons but a different number of electrons
The mass number of an element is
the sum of the protons and the neutrons
Which element has the atomic number 9?
What does the following element description actually mean?
a uranium atom with 92 protons and 146 neutrons
If a neutral elements has 8 neutrons and 7 electrons, which expression correctly identifies the element?
If a neutral element has the following chemical symbol, how many electrons does it have?
If two protons and two neutrons are removed form the nucleus of an oxygen-16 atom, a nucleus of which element remains?
carbon-12 because it loses two neutrons and two protons, leaving it with an atomic mass of 12 and atomic number of 6, which is Carbon
an element has two different isotopes: one that weighs 65 amu and another that weighs 67 amu. If the average atomic mass of all the isotopes is 66.5 amu, what can be said about the relative abundance of the isotopes
the isotope with the mass of 67 is more abundant than the isotope with the mass of 65
Which of the following is the strongest attraction?
a. dipole-induced dipole
b. induced dipole- induced dipole
which of the following is the weakest attraction?
a. dipole-induced dipole
b. induced dipole-induced dipole
induced dipole- induced dipole
which of the following is the main form of attraction between two water molecules?
a. hydrogen bonding
b. dipole-induced dipole
d. induced dipole-induced dipole
which of the following would have the highest boiling point?
Which of the following is most likely to have the weakest induced dipole-induced dipole interaction?
Which of the following would have the highest boiling point?
Which of the following intermolecular forces best describes why non polar molecules like oil dissolve in non polar gasoline?
Induced dipole-induced dipole
which of the following material phases cannot form a solution
d. all of the above can form solutions
all of the above can form solutions
in a solution of 77% Nitrogen and 23% oxygen, which is the solvent?
Which of the following solutions is the most dilute?
a.one liter of water with 1 gram of sugar
b. One liter of water with 10 grams of sugar
c. one liter of water with 5 grams of sugar
d. one liter of water with 2 grams of sugar
one liter of water with 1 gram of sugar
which of the following solutions is the most concentrated?
a. one liter of water with 1 gram of sugar
b. One liter of water with 10 grams of sugar
c. one liter of water with 5 grams of sugar
d. one liter of water with 2 grams of sugar
one liter of water with 10 grams of sugar
which of the following describes the term concentration?
it is the mount of solute in a given amount of solution
what statement best describes a mole?
it is a very large number chemists use to count atoms or molecules
if 10 moles of sucrose are dissolved to make a 4.0 molar solution, how many liters of solution are there?
How many molecules of sucrose are in a 0.5 moles of sucrose?
3.01 x 10^23 molecules of sucrose
Describe what can happen to a hot solution that is saturated with a solid as it cools slowly and undisturbed
the solid stays in the solution
Describe what usually happens to a hot solution that is saturated with sugar as it cools when making rock candy
some of the sugar comes out of the solution
which of the following might have the best solubility in water?
Which of the following might have the lowest solubility in water?
How is the solubility of a solid generally affected by temperature?
as temperature goes up, the solubility increases
Under which of the following conditions would you expect the highest solubility of CO2 gas in water?
low temperature and high pressure
Why might a solvent like gasoline be better for removing grime than water?
a. grime has similar attractive forces as the gasoline and so, is more soluble
b. like dissolves like
c. water is polar and doesn't interact well with the nonpolar grime
d. all the above
all the above
which of the following picture best describe a soap
the one with a polar head and long nonpolar tail
which of the above would best describes how soap behaves in water
the one where the non polar heads are on the outside and the non polar tails on the inside, in the shape of a circle
which statement below about soaps and detergents is not true?
a. detergents are often stronger than soaps
b. detergents are synthetic
c. "detergent" is just another name for "soap"
d. detergents can be made with less cost than soap
"detergent" is just another name for "soap"
a solid has a solubility at room temperature of 78 grams per liter. If 1.0 L of a hot solution containing 100 g of solute is cooled to room temperature, how much solid will be formed if precipitation occurs?
why does water expand when it goes from a liquid to a solid?
the water molecules form an open hexagonal crystal structure
which of the following statements best describes the usual properties of most compounds besides water?
the density of a material increases when it solidifies
when water freezes it expands, what is filling the extra volume in the open crystal structure?
why do ice skates work
the pressure of the blades on the ice creates a temporary water layer
if you add heat energy to ice at 0C where does the energy go?
the energy is used to break hydrogen bonds and melt the ice
how does a solute such as salt or sugar affect the freezing and boiling points of water?
solutes decrease the freezing point and increase the boiling point
which of the following describes what happens when you increase the temperature of water?
the molecules start to vibrate and move farther apart
what is a cohesive force?
attraction between two molecules of the same substance
What is an adhesive force?
attraction between two different molecules
why does a paper clip float when placed on water?
surface tension of the water
what is surface tension?
the tendency for molecules at the surface of a liquid to hold together
at what temperature is H2O most dense?
based on the height of the water in each tube, which one of the above should have the narrowest diameter?
the one where the water high is the tallest
why does evaporation cool a liquid?
the evaporating molecules take some heat with them as they leave the surface
why does sweat cool you off?
the water molecules evaporate from your skin and carry away heat
why is it easier to cool off on a dry day vs. a humid one?
evaporation is greater on a dry day and more heat is carried away
how are pressure and the boiling point of a liquid related?
as the pressure decreases the boiling point decreases
what is the specific heat capacity of a substance/
the amount of heat required to raise the temperature of 1 gram of a substance by 1 C
which of the following describes a material with a high specific heat capacity?
a material that requires lots of energy to raise its temperature
if the specific heat capacity of aluminum is 0.9 J/ (g C), how much heat is needed to raise the temperature of a 10 gram piece by 20C
If the heat of melting for ice is 335 J/g, how much heat would be required to melt 5 grams of ice at 0C to water at 0C?
which of the following would cause the worst burn?
a 1 gram of steam at 100C
b. 1 gram of water at 0C
c. 1 gram of water at 50 C
d. 1 gram of water at 100C
1 gram of steam at 100C
does soap increase or decrease water's surface tension?
water coming out of volcanic sea vents at the bottom of the ocean can reach temperatures in excess of 300 C without boiling. How is this possible?
the extreme pressure exerted by the miles of ocean water above prevent the formation of any bubbles of water vapor
by how much will the temperature change if 5 grams of water is heated by 230 joules of heat?
What is a chemical reaction/
when one or more new compounds are formed by rearranging atoms
given the following generic chemical reaction, which is the reactant?
x is the reactant
for the following balanced reaction, which of the following substances is a solid?
Balance the following chemical equation
___N2 + __H2-->__NH3
Which equations are balanced?
b. 3Al (s) +3Br2(l)-->Al2Br3
if it takes three golf balls to equal the mass of one tennis ball, what mass of golf balls do you need to equal the number of tennis balls in one kilogram of tennis balls?
if an oxygen atom weighs 4 times that of a helium atom, how many helium atoms would you need to equal the mass of 2 oxygen atoms?
What if the approximate mass of one mole of F2?
which of the following has the greatest number of particles?
a. 22.99 g of Na
b. 1 mole of Na
c. 6.02x10^23 atoms of Na
d.all are the same
all are the same
what is a reaction rate?
it is the speed at which reactants are consumed and product is formed
how does a catalyst generally increase the rate of a reaction?
it lowers the activation energy
which of the following reactions would go the fastest?
the one where the particles are tightly packed
for the above energy profiles, which reaction has the lowest activation energy?
the one with the smallest bump between reactants and products
which of the following statements about catalysts is not true?
a. a catalyst lowers the activation energy of a reaction
b. a catalyst is not consumed by the reaction overall
c. a catalyst speeds up a chemical reaction
d. a catalyst makes a process less efficient
a catalyst makes a process less efficient
enough _____ needs to be provided to a reaction so that the reaction can start
given the following energy profiles, which of the following reactions is endothermic?
the one where the reaction starts from the bottom then goes to the top before sloping down to products
one amu equals 1.66x10^-24 grams. three amu equals how many grams?
what is the formula mass of ammonia NH3?
what is the approximate molar mass of a molecule of C5H11Br?
C5=60, H11=11, Br=80
Why does a reaction usually occur faster when it is warmed?
warming increases the kinetic energy of particles and the effective collion rate
which of the following reaction energies is the most endothermic?
which would have the highest entropy?
a. steam at 150C
b.ice at -20C
c.water at 0C
d.steam at 100C
e.water at 100C
steam at 150C
what is the number of grams of CO2 produced if you combust .d moles of Ch4 according to the following balanced equation?
.5x 1 molCO2= 22 g
which of the following is not contained in the cytoplasm?
What is the purpose of the plasma membrane?
it acts as a boundary, but also lets molecules in and out
how are disaccharides and monosaccharides related?
a disaccharide is composed of two monosaccharide units
which of the following is a complex carbohydrate?
e. all of these
all of these
starch is a polysaccharide that
is made by plants to store energy
cellulose and starch is similar to each other in that they both
are polymers of glucose
what do all fats have in common?
they are all formed from glycerol and fatty acids
why do most steroids have chemical structures very similar to cholesterol?
cholesterol is a fat, which is a lipid like steroids
what is an obvious physical difference between saturated and unsaturated fats?
saturated fats are usually solids while unsaturated fats are usually liquids
which of the following is not a function of fat within the body?
a. it acts as a cushion to prevent injury
b. it acts as a source of glucose
c.it acts as an energy reserve
d.it acts as insulation
it acts as a source of glucose
what functional groups are found in all amino acids?
amines and carboxylic acids
what is the purpose of an enzyme?
to speed up biochemical reactions
proteins are _____ that have some biological function in living systems
why is a permanent wave not really permanent?
untreated new hair grows in to replace treated old hair
which of the following is not a matched pair of: a protein's structural level name and an example of that level
a.primary structure-straight sequence of amino acids
b.secondary structure- parts of chain wrap into an alpha helix
c.tertiary structure- short chain portions fold into pleated sheet
d. quartenary structure-separate proteins join to form a larger protein
.tertiary structure- short chain portions fold into pleated sheet
the following statement describes what level of structure in a protein?
the chain of amino acids coils into a helix
list codon, gene, nucleic acid, and nucleotide in order of decreasing size (biggest to smallest)
nucleic acid, gene, codon, nucleotide
which of the following is not a component of a nucleic acid
b. nitrogenous base
d. phosphate group
which of the following abbreviations for nitrogenous bases is not found in DNA?
Which of the following plays the most active role in protein manufacture?
how many nucleotides does it take to code a single amino acid?
What is the major difference between nucleotides of deoxyribonucleic acid and ribonucleic acid?
the DNA acid is missing an oxygen on the sugar
Which amino acid is coded for by the mRNA sequence AGG?
According to the figure above, which amino acid does the DNA sequence ATG code for?
what polypeptide is coded for by the mRNA sequence auggacccagcgugaugua
Gas fills all the space available to it. Why then doesn't the atmosphere go off into space?
the atmosphere is held down by gravity
how does the density of air in death valley, which is 86 meters below sea level, compare with the density of air at sea level?
the air density you experience in Death Valley is greater because there are more air molecules above you
before boarding an airplane you buy an airtight foil package of peanuts to eat during your journey. while in flight you notice that the package is puffed up. Explain.
there is less air pressure against the outside of the foil package
a catalytic converter increases the amount of carbon dioxide emitted by an automobile. is this good news or bad news?
good news because it means less poisonous chemicals are being emitted
what is the temperature of 2 moles of a gas held at a volume of 5 liters, and a pressure of 3 atmosphere
in a still room, cigar smoke sometimes rises only partway to the ceiling because
it encounters warm air
what is the source of atmospheric pressure?
it is the weight of the air above that is pushing down on us
which of the following gases makes up most of the atmosphere?
Which of the following gases has the smallest amount in the atmosphere?
what would be the effect on a volume of gas if we were to double the pressure on the gas?
the gas volume would be cut in half
why do spray cans explode if heated above 50C?
an increase in temperature will increase the pressure inside the aerosol can. When the pressure inside the can exceeds the pressure limit of the can, it explodes
what is meant by air pollution?
any material that is harmful to health or the environment
what makes aerosols problematic?
they act as little chemical reaction sites
which of the following describes temperature inversion?
a layer of warm air sitting on top of a layer of cold air
what is the major harmful component of industrial smog?
which is a main harmful component of photochemical smog?
what type of smog do catalytic converters help reduce?
the portion of the atmosphere that filters out 95% of the incident UV radiation is the
where does the sulfur in fossil fuels come from?
sulfate ions in water sources
which of the following statements accurately describes the action of ozone
it absorbs UV radiation as it is formed and destructed
why do the natural reactions involving ozone not lead to depletion of the ozone later?
UV radiation generates more ozone
what is the environmentally unfriendly component of chlorinated flurocarbons that ultimately damages ozone?
what component of our world acts like the windows of a car left out in the sun by allowing light into the system?
which of the following statements about carbon dioxide are true?
the amount of carbon dioxide is closely related to global temperature
which of the following is not a greenhouse gas?
what is paper made of?
how are paper and cooked spaghetti similar to each other?
a. they both consist of intertwined strands
b. they are soft when wet and harder when dry
c.they are both made of chains of glucose
d. all of the above
all of the above
why is chlorine no longer used to bleach paper?
it was found to produce cancer-causing byproducts
which of the following is a reason to switch to materials like hemp for making paper?
a. these plants can yield more than one crop per year.
b. they require lower amounts of chemicals to break apart the cellulose
c. these plants grow faster than trees
d. all the above
all the above
fallen trees rot as naturally occurring fungi digest the lignins that normally bind the wood fibers together. How might these fungi be used in the manufacture of paper.
these fungi can be used in place of sulfurous acid
what property of nitrocellulose helped in the early photography and movie industry?
it could be molded and rolled into thin, transparent films
which of the following polymers has the same composition (molecules) as cellophane?
a freshly cut ping-pong ball smells of camphor because
camphor is used to mold ping-pong balls into their shape
why are ping-pong balls so highly flammable?
they are made from nitrocellulose
which of the following were originally made by chance occurrence (accident)?
c. volcanized rubber
d. two of these
e. all of these
nitrocellulose and volcanized rubber
what was the reason for the original growth of the synthetic polymer industry?
World War II
what is one of the potential disadvantages of plastic?
they are made with fossil fuels
how are most metals found in nature?
as ionic compounds
which of the following ion types usually form water soluble metal salts?
which of the following metals is most likely to be found in nature in its native (pure) form
why is it better to recycle metals than to mine more?
it takes far less energy to recycle
can only group 1 elements form halides?
why are ores valuable?
metals can be extracted from them
which of the following statements best describes glass?
glass is an amorphous material
when is glass not fragile?
when in a hot molten phase
what causes the color in colored glass?
added metal and nonmetal atoms
what is the main disadvantage of ceramics?
which of the following is an example of a natural composite?
what is one of the main advantages of composites?
they are strong and lightweight
concrete by itself is not strong enough to build large structure. How do engineers overcome this weakness?
they add steel bars
THIS SET IS OFTEN IN FOLDERS WITH...
Chemistry Final review Conceptual
CH 7 Quiz Review
YOU MIGHT ALSO LIKE...
CHEM-1405, Tao Tao, Final Exam
Chemistry Exam - Onyia
CHEM 1601 FINAL
General Chemistry 160&162 Review Chapters 1-5
OTHER SETS BY THIS CREATOR
CS 1114 Post Lab Quizzes Test 2
CS 1114 Test 2 Review
Nuclear Test 2
Nuclear CH 2
OTHER QUIZLET SETS
Physics Tests 1,2,3,4
Physics Exam 2
Density Questions C Track - Sam Adam, Jocks, Ben