Chemistry
EOG Review Questions
1. Which is evidence that elements can
combine to form new compounds?
A. melting a solid
B. freezing a liquid
C. moving a piece of metal with a magnet
D. pouring two liquids together to create a
solid
2. Which property of metals allows them
to be used to make coins that have the
same thickness?
A. electrical conductivity
B. density
C. malleability
D. specific heat
3. Which best describes the physical
change of an aluminum soda can after it
is crushed?
A. There is a change in the mass of the can.
B. There is a change in the weight of the
can.
C. There is a change in the volume of the
can.
D. There is a change in the specific heat of
the can.
4. Which best describes why metals are used for
making pots and pans that are used for
cooking?
A. Metals have low specific heats and high
melting points.
B. Metals have high specific heats and low
melting points.
C. Metals have low specific heats and low
melting points.
D. Metals have high specific heats and high
melting points.
5. A chemical reaction produces two new
substances, and each product has a mass
of 25 grams. What was the total mass of
the reactants?
A. 25 grams
B. 50 grams
C. 75 grams
D. 100 grams
6. Chemical X has a mass of 5 grams, and
chemical Y has a mass of 10 grams. If the
two chemicals are mixed and a complete
chemical reaction takes place, what is
most likely the mass of the product?
A. 5 grams
B. 10 grams
C. 15 grams
D. 50 grams
7. Why were some pesticides such as DDT
removed from public use?
A. They can cause heart disease.
B. They can cause diabetes.
C. They can cause meningitis.
D. They can cause cancer.
8. The element silicon is best used for
which purpose?
A. as a container to keep coffee hot
B. as a semiconductor in computer chips
C. as a material to make airplane frames
D. as a malleable material for coins and
jewelry
9. Which is an example of a physical
change?
A. boiling
B. burning
C. rotting
D. rusting
10. What characteristic of aluminum allows
it to be made into aluminum foil?
A. It is dense.
B. It is soluble.
C. It is magnetic.
D. It is malleable.
11. Which pure substance is composed of
more than one element?
A. carbon
B. gold
C. water
D. sodium
12. After a chemical reaction occurs in an open
test tube, measurements indicate that the
mass of the reactants is greater than the
mass of the products remaining in the test
tube. What most likely explains the
measurements?
A. A gas was produced.
B. A solid was produced.
C. The salinity of the reactants was high.
D. The temperature of the reactants was low.
13. Which factor best explains why some
people will develop cancer and others
will not after being exposed to the same
high levels of a harmful chemical?
A. concentration of the chemical
B. potency of the chemical
C. individual susceptibility to the chemical
D. individual exposure to the chemical
14. Which is the best way to determine if
an object is made of pure silver?
A. determine the solubility of the object
B. test to see if the object is chemically
reactive
C. determine the density of the object and
compare the known density of pure silver
D. compare the mass of the silver object to
the mass of a piece of pure silver
15. Which is a naturally occurring
chemical?
A. aspirin
B. salt
C. plastic
D. nylon
Substance
Specific Heat (J/kg C)
Lead
128
Iron
448
Glass
837
Ice
2,090
16. This table shows the specific heat of four
substances.
If each substance is exposed to the same amount of
energy for one minute, which substance will get the
hottest?
A. Lead
B. Iron
C. Glass
D. Ice
17. A beaker with 100 mL of water is
placed on a hot plate and heated. The
water boils at 100°C. At what
temperature would 90 mL of water boil?
A. 10°C
B. 90°C
C. 100°C
D. 110°C
Quick Review!
1. Which of the following is the heaviest?
A. The Electron
B. The proton
C. The neutron
D. The nucleus
Quick Review!
2. Neutral Lithium has 3 protons. During a
chemical reaction, 1 electron is removed. How
many protons does lithium have now?
A. 3
B. 2
C. 1
D. You must know what element lithium reacted
with to determine this
Quick Review!
3. Which phase has the greatest density?
A. The solid phase
B. The liquid phase
C. The gas phase
D. The temperature must be known to answer
this question
Quick Review!
4. How does perspiration cool your skin?
A. It carries heat off when it condenses on your
skin
B. It carries heat off when it evaporates on your
skin
C. It carries heat off when it sublimes on your
skin
D. It carries heat off when it deposits on your
skin
Quick Review!
5. Laura is studying an unknown substance. She
has recorded several properties in his
notebook. Which of these properties is a
physical property?
A. Boiling point
B. Flammability
C. Tendency to tarnish
D. Tendency to rust
Quick Review!
6. The chemical combination of Atom A and
Atom B would result in
A. An atom AB
B. An element AB
C. A molecule AB
D. A nucleus AB
Quick Review!
7. The components of a homogeneous mixture
could be described as
A. Inseparable
B. Evenly mixed
C. Chemically bound
D. Unevenly mixed
Quick Review!
8. There are 3 mixtures listed below. Which one,
if any, could NOT be separated by
evaporation?
A. Salt and water
B. Sawdust and water
C. Iron filings and water
D. All of these mixtures can be separated by
evaporation
Quick Review!
9. Carbon combines with oxygen to form carbon
dioxide. What is the word equation for this
chemical reaction?
A. Carbon dioxide  carbon + oxygen
B. Carbon carbon dioxide + oxygen
C. Carbon + oxygencarbon dioxide
D. Carbon dioxide + oxygen  carbon
Quick Review!
10. Which of the following may happen during a
physical change?
A. New substances are formed
B. Reactants form products
C. A precipitate is formed
D. The temperature may increase