CHEM 110 (BEAMER)
REVIEW PRACTICE-11
EXAM 2 REVIEW
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EXAM REVIEW PRACTICE-11: Answer Key
Physical and Chemical Properties
General Information

This assignment is not due. This assignment is to help you review for Exam 2.

Unless otherwise stated, you do not need to write answers in complete sentences.
Physical Property or Chemical Property I
PHYS OR CHEM
1)
Mercury is a liquid at room temperature.
PHYS
2)
Iron corrodes in water.
CHEM
3)
Sulfur powder is yellow.
PHYS
4)
Sodium chloride dissolves in water.
PHYS
Physical Property or Chemical Property II
5)
Baking soda fizzes when added to vinegar.
CHEM
6)
The density of ethanol is 0.789 g/mL.
PHYS
7)
Elemental carbon is brittle.
PHYS
8)
Platinum does not rust in water.
CHEM
Physical Property or Chemical Property III
PHYS OR CHEM
9)
Gold is malleable.
PHYS
10)
Blood turns red in the presence of oxygen.
CHEM
11)
Paper turns brown in the presence of acid.
CHEM
12)
Alcohol is miscible in water.
PHYS
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CHEM 110 (BEAMER)
REVIEW PRACTICE-11
Physical Change or Chemical Change
EXAM 2 REVIEW
PHYS OR CHEM
13)
When blue food coloring is added to water, the mixture turns blue.
PHYS
14)
When a blue liquid is added to a red liquid, the mixture turns colorless.
CHEM
15)
Wood is chopped.
PHYS
16)
Wood is burned.
CHEM
Physical Change or Chemical Change
PHYS OR CHEM
17)
Hydrochloric acid produces heat when added to water.
CHEM
18)
An aluminum can is crushed.
PHYS
19)
Iron is heated until it melts.
PHYS
20)
Cookie dough is baked and turns into cookies.
CHEM
Mini-Essays
21)
A student says that water boiling is a chemical change because heat is added and because the physical
appearance of water and ice are different. Is this true or false? In your explanation, include the definition of
a physical change and the definition of a chemical change. Five sentences maximum.
Critical thinking: You are on your own with this one.
22)
Explain why “dissolving” is a physical change, using sugar and water as an example. Include the definition
of “physical change” in your explanation. Five sentences maximum.
Critical thinking: You are on your own with this one.
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