Name: __________________
Period: __________________
Date: ___________________
Chapter 2 Review
Directions: Complete the sentences using the word bank below. You may use a word more than
once or not at all. Use the glossary in the back of your textbook for help.
1. In order to explain why matter acts the way it does on the _______________ level,
it is important to have a look at the behavior of particles on the _______________ level.
2. In order to determine the density of a substance, you need to know both the
________ and the ___________ of the substance.
3.
4.
5.
6.
The unit for density is ______ because ______ is divided by __________.
If the density of substance A is greater than the density of water it will ________.
If the density of substance B is less than water it will __________.
On a graph, the slopes of each of these substances would be greatest for substance ___
and least for substance ____ with water being somewhere in the ________.
7. The evidence for a chemical reaction includes: release of ______ as measured on a
thermometer, change in ______ as can be seen or change in_______
such as a bubbling gas or a solid forming that was not there before.
8. ___________ changes do not change the substance to a different kind of substance.
9. ______ substances include elements and compounds but not mixtures.
10. In an enclosed system, when a chemical reaction takes place and no substances are
allowed to escape the original total mass and the final total mass are ____________
according to the Law of Conservation of _____.
11. In a chemical reaction, the volume may change but the ____ does not as the substances
change phase or state.
g/cm3
phase
different
B
macroscopic
physical
solid
middle
water
microscopic
Wordbank
chemical
liquid
top
g/mL
volume
heat
pure
bottom
color
float
matter
equal
A
mass
sink
ACROSS
4 Able to be seen with your eyes
7 Has equal but opposite charges
8 A group of atoms bonded together
12 The ability of one substance to dissolve in
another.
13 A material through which charges can move.
15 A type of atom found on the periodic table
16 The positive particle in the nucleus of the atom
17 Bands of light produced by elements
18 Substances that conduct electricity in liquids
19 Data or observations
20 A substance made from two or more atoms that
are chemically bonded
DOWN
1 A tool to measure conductivity
2 A material that does not conduct charges
3 An extremely small negatively charged particle
in an atom.
5 The smallest unit of matter
6 A logical assumption based on evidence
9 The central core of an atom containing protons
and neutrons
10 Smaller than what you can see with your eye
11 A charged particle
14 A physical property of a substance that is mass
divided by volume
Word Bank
Nucleus
Proton
Molecule
Insulator
Inference
Spectra
Evidence
Atom
Conductivitymeter
Ion
Dipole
Electron
Solubility
Element
Conductor
Density
Macroscopic
Electrolytes
Compound
Microscopic