Chapters 1, 2 and 6
Terms in this set (45)
The study of the composition, structure and properties of matter, the process that matter undergoes, and the energy changes that accompany these processes.
Name six branches of study in chemistry.
Organic, inorganic, physical, analytical, biochemistry and theoretical.
What is mass?
A measure of the amount of matter
What is matter?
Anything that has mass and takes up space
List two examples of chemical properties
Rust on metal
What is an example of a change in state?
Water boiling and turning to vapor
Write the names of the following symbols K, Na, and Ag.
Potassium, sodium and silver
Why are the four states if matter?
Solid, liquid, gas and plasma
What two things can nagger be classified as?
Mixtures and pure substances
Classify the four elements.
Metals, non-metals, metalloids and noble gases
What are the horizontal rows of elements in the periodic table called?
What are some examples of physical changes?
Grinding, cutting, melting and boiling a material
What is a physical change?
A change of matter from one form to another without a change in chemical properties
What elements tend to be brittle and poor conductors?
Write the names for the following elements; Br, As, Sb and Sn
Bromine, Arsenic, Antimony and Tin
What is scientific method?
A series of steps followed to sold problems, including collecting data, formulating a hypothesis, testing said hypothesis and stating the conclusion.
Write the formula for density
Density= mass/volume or
A sample of aluminum metal had a mass of 8.4 g. The volume of the sample is 3.1cm cubed. Calculate the density of aluminum.
2.7g cm cubed
What is dimensional analysis?
A mathematical technique for studying dimensions of physical quantities
Convert 1m cubed to 1cm cubed
1,000,000 cm cubed
Convert 10.5g to kg
Convert 1.57 km to m
The mass and volume of a substances density is 1.49 g/mL. The correct value of the density it 1.30 g/mL. What is the percentage or error?
What is the percentage of error for a mass measure of 17.7 g, given that the correct value is 21.2g?
Do the following calculation; 16.25g/5.1442 mL
Round 2.6765 to two significant figures.
What is percentage error?
Calculated by subtracting the accepted value from the experimental value, dividing the differences by the accepted value, and then multiply by 100.
Write the equation that is used to calculate percentage error
Percentage error= value (experimental)-value (accepted)/ value accepted X 100
How many significant figures are in 28.6g?
How many significant figures are in 910m?
Draw a dot diagram for NH4
How many valence electrons does Fluorine have?
Draw a for diagram for BeF2
Determine the electronegativity difference for H and I
Determine the EN difference for Si and Cl
Determine the EN difference for K and Br
Draw a dot diagram for F2
Draw a dot diagram for NO3^-
What is covalent bonding?
A bond formed when atoms share one or more pairs of electrons
Is hydrogen polar covalent or ionic?
What are double and triple bonds referred to as?
Multiple does the octet rule state?
Many chemical compounds tend to form bonds so that each atom shares or had 8 electrons in it's occupied energy level
What are the 3 major types of chemical bonding?
Ionic, covalent and metallic
How many pair of electrons are shared in a single bond?
One pair of electrons between two atoms
Draw a dot diagram for PO4^-3
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