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Terms in this set (150)
is ripping paper a chemical or physical change?
is burning paper a physical or chemical change?
change if identity, burning, odor, creation of gas, color change, precipitate is formed
what are 6 characteristics of a chemical change?
is digesting food a chemical or physical change?
is boiling water chemical or physical change?
are electrons positive, negative or no charge?
are protons positive, negative or no charge?
are neutrons positive, negative or no charge?
in the electron cloud
where are the electrons found?
where are the protons and neutrons found?
by looking at the atomic number
how do you find the number of electrons and protons?
by subtracting the atomic number from the atomic mass
how do you find the number of neutrons?
a group of atoms combined that is bonded by a chemical bond
what is a molecule?
are atoms or molecules smaller?
they take up space and have mass
why are atoms considered matter?
positive and negative charges
why are atoms neutral?
oxygen and sugar
what are the products of photosynthesis?
what is the opposite of photosynthesis?
divide the mass by the volume
how do you find the density of a regular solid?
you use the triple beam balance
how do you find the mass of a regular solid ?
you find the length, width, height and then multiply it all together
how do you find the volume of a regular solid
pour water into a graduated cylinder, write down the number and then add the solid. see how where the water level is and then you find the difference of the 2 numbers.
how do you find the volume of an irregular solid?
what would be the tools you use to find the volume of a regular solid?
what would be the tools you use to find the volume of a liquid?
count the spaces between the numbers and divide it by the difference
how do you find the volume of a liquid?
what is the unit for density?
what is the unit for volume of a regular solid?
ml or L
what is the unit when you read the graduated cylinder?
are metals malleable?
are nonmetals malleable?
something can be drawn into a long thin wire
what does ductile mean?
something can be hammered and flattened
what does malleable mean?
are metals good conductors?
do nonmetals have a high or low melting point?
are nonmetals shiny?
group 1, left side
where are the most reactive metals found on the periodic table?
what is the diffusion of water molecules through a selectively permeable membrane?
what it the process by which molecule move from an area of high concentration to an area of low concentration?
does active transport use energy?
does passive transport use energy?
transporting proteins and engulfing
what are 2 examples of active transport?
diffusion and osmosis
what are 2 examples of passive transport?
protects and supports the cell
what does the cell wall do?
is the cell wall in a plant or animal cell or both?
controls what comes in and out of the cell
what does the cell membrane do?
is the cell membrane in a plant or animal cell or both?
controls all the cell's activities
what does the nucleus do?
is the nucleus in a plant or animal cell or both?
produce the cell's energy
what does the mitochondria do?
forms a maze like passage way which proteins and other materials are carried from 1 cell to another
what does the endoplasmic reticulum do?
is the endoplasmic reticulum in a plant or animal cell or both?
small grain like structures where the proteins are made
what are ribosomes?
are the ribosomes in a plant or animal cell or both?
receive proteins and other newly formed materials and then distributes them to other parts of the cell
what do the golgi bodies do?
are golgi bodies in a plant or animal cell or both?
capture the sun's energy and use it to produce food for the cell
what do chloroplasts do?
are chloroplasts in a plant or animal cell or both?
store things in the cell
what do vacuoles do?
are vacuoles in a plant or animal cell or both?
break big food particles into smaller ones
what do lysosomes do?
are lysosomes in a plant or animal cell or both?
DNA and carry genetic information
what do chromatin contain and carry what?
are chromatin in a plant or animal cell or both?
has chloroplast, cell wall, rectangular, big vacuoles, no lysosomes
what are 5 ways to tell if it is a plant cell?
do plant cells have big or small ribosomes?
the amount of material an object has
what is mass?
the passing of traits from parents to offspring
what does heredity mean?
the scientific study of heredity
what are genetics?
an organism that always produces offspring with the same form of a train as the parent
what does purebred mean?
factors that control traits
what are genes?
different forms of a gene
what are alleles?
one whose trait always shows up in the organism when the allele is present
what is the dominant allele?
masked, or covered up whenever the dominant allele is present
what is the recessive allele?
having two different alleles as a trait
what are hybrids?
a characteristic that an organism can pass on to its offspring through its genes
what is a trait?
what is another name for heterozygous?
what is another name for homozygous?
a cell membrane is _________ permeable
compounds are written using ____________.
an _____________ is a substance consisting of a single type of atom.
is an element pure?
elements are separated in _________ reactions.
compounds are separated in ________ reactions.
mixtures are separated in _________ reactions
are compounds pure?
are mixtures pure?
2 or more kinds of atoms chemically bonded
what are compounds?
1 kind of atom
what are elements?
2 or more different elements or compounds physically intermingled
what are mixtures?
do compounds have a fixed ratio?
gold and copper
what are 2 examples of elements?
are humans a compound mixture or element?
are rocks a compound mixture or element?
is mowing the lawn physical or chemical change?
do mixtures have a chemical bond?
does each mixture have its own identity?
do elements or compounds have a fixed ratio?
do compounds retain their individual properties?
is every molecule the same in compounds elements or mixtures?
can elements be broken down into a simpler type of matter?
can compounds be broken down into a simpler type of matter?
humans, milk, lemonade
give 3 examples of mixtures.
oxygen, carbon dioxide, pure water
give 3 examples of compounds.
who made the 1st periodic table?
using 1 or more of your sense to gather information of the world
what is observing?
what is the factor that can change in an experiment?
the part of an experiment that you don't change- it is used for comparison
what is the control part?
what is the part of the experiment that you are testing called?
what is the 1 factor you change to observe what will happen called?
what is another name for the independent variable
what is the variable called that changes as a result of the independent variable?
what is another name for dependent variable?
is it quantitative observation or qualitative observation that include numbers?
a prediction about what will happen in the future
what is the definition of prediction?
explaining or interpreting an observation or statement that has already happened
what is an inference?
a process that is used to question about the world around us
what is the scientific method?
an educated guess
what is a hypothesis?
table used to hold information in an organized way
what is a data table?
variables that don't change
what are controlled variables?
what is another name for controlled variables?
what is data?
which axis do you put the independent variable?
which axis do you put the dependent variable?
it serves as a standard of comparison
what is the control group?
the group whose conditions are being changed
what is the experimental group?
which state has definite volume and definite shape?
which state has definite volume but no definite shape?
which state has no definite volume and no definite shape?
is solid a fluid or rigid?
is liquid a fluid or rigid?
is gas a fluid or rigid?
does solid have low compressibility or high compressibility?
does liquid have low compressibility or high compressibility?
does gas have low compressibility or high compressibility?
does water have a high or low viscosity?
does honey have a high or low viscosity?
what are 2 names when a solid turns into a liquid?
what is the name when a solid turns into a gas?
what are 2 other names when a liquid turns into a solid?
what are 2 other names when a liquid turns into a gas?
what is it called when a gas turns into a solid?
what is it called when a gas turns onto a liquid?
is the melting of ice an example of fusion?
what is an example of freezing?
liquid to a gas
what is evaporation?
gas to solid
what is deposition?
what is an example of deposition?
what is an example of condensation?
ruler and graduated cylinder
what tools are used to find the volume or regular and irregular solids and liquids?
in respiration, what is released?
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