Chemistry
Unit 1 Review
Name _________________________
Date __________________________
Unit 1 test will cover material on pages 3-22 of your ISN. The test will have the following types of
questions:
• Matching
• Multiple Choice
• Open-Ended Questions
• Lab type questions
• Calculations
Remember to bring your calculator. Also, remember to bring your ISN. All ISNs will be collected and
graded.
1. Define matter.
Anything that takes up space (volume) and has mass.
2. For each of the following words, place them in the correct column of the table below.
air
magnetic field
car
feeling
heat
light
radio
Thought
flashlight
textbook
Matter
Not Matter
Air
Car
Human body
Radio
Flashlight
textbook
Magnetic field
Feeling
Heat
Light
Thought
human body
3. What are the steps of the scientific method?
State the problem.
Perform Research
Make a hypothesis
Perform experiment
Collect Data
Analyze Data
Conclusion
1
Match the items in column A with column B.
Column A
Column B
4. Refers to physical characteristics such as color,
odor, or shape (B)
a.
observation
5. Refers to mass, volume, and temperature measurements
b.
qualitative data
c.
quantitative data
d.
independent variable
e.
dependent variable
(C)
6. A variable controlled by the experimenter (D)
7. The act of gathering information (A)
8. Changes in value based on the value of the controlled
variable (E)
9. What are three important safety rules?
Choose any rule from the safety contract on page 4 of your ISN.
10. What is the difference between a physical and a chemical property?
A physical property can be observed without changing the substance (ex. color, mass, volume,
any phase change) and a chemical property can only be observed by changing the substance
(ex. reactivity with water, flammability).
For 11-15, determine if it is a substance or a mixture, and then determine if it is an element,
compound, heterogeneous, or homogeneous.
11. Zinc – substance, element
12. Sand and water – mixture, heterogeneous
13. Milk – mixture, homogeneous
14. Eggs – mixture, heterogeneous
15. Aluminum Chloride - substance, compound
16. What are the four indications that a chemical reaction has occurred?
Color change, energy is released or taken in by the substances, precipitate is formed, gas is
released and the gas is a new substance.
17. The density of aluminum is 2.70 g/mL. If the mass of a piece of aluminum is 244 grams, what is
the volume of the aluminum?
𝑴
𝑫 = , 𝒎𝒖𝒍𝒕𝒊𝒑𝒍𝒆 𝒃𝒐𝒕𝒉 𝒔𝒊𝒅𝒆𝒔 𝒃𝒚 𝑽
𝑽
𝑽𝑫 = 𝑴, 𝒅𝒊𝒗𝒊𝒅𝒆 𝒃𝒐𝒕𝒉 𝒔𝒊𝒅𝒆𝒔 𝒃𝒚 𝑫
𝑴
𝑽 = 𝑫
𝟐𝟒𝟒 𝒈𝒓𝒂𝒎𝒔
𝑽 = 𝒈 = 𝟗𝟎. 𝟑𝟕 𝒎𝑳
𝟐. 𝟕𝟎 𝒎𝑳
2
18. An ice cube measuring 5.80 cm by 5.80 cm by 5.80 cm has a density of 0.917 g/ cm3. What is
the mass?
𝑫 = 𝑴
, 𝒎𝒖𝒍𝒕𝒊𝒑𝒍𝒆 𝒃𝒐𝒕𝒉 𝒔𝒊𝒅𝒆𝒔 𝒃𝒚 𝑽
𝑽
𝑽𝑫 = 𝑴
Before plugging in, need to find the volume of the ice cube.
𝑽 = 𝑳 ∗ 𝑾 ∗ 𝑯 = 𝟓. 𝟖𝟎 𝒄𝒎 𝟓. 𝟖𝟎 𝒄𝒎 𝟓. 𝟖𝟎 𝒄𝒎 = 𝟏𝟗𝟓. 𝟏𝟏𝟐 𝒄𝒎𝟑
𝑽𝑫 = 𝑴 = 𝟏𝟗𝟓. 𝟏𝟏𝟐 𝒄𝒎𝟑
𝟎. 𝟗𝟏𝟕 𝒈
= 𝟏𝟕𝟖. 𝟗𝟐 𝒈
𝒄𝒎𝟑
19. A cup of gold colored metal beads was measured to have a mass 425 grams. By water
displacement, the volume of the beads was calculated to be 48.0 cm3. Given the following
densities, identify the metal.
Gold: 19.3 g/mL
Copper: 8.86 g/mL
Bronze: 9.87 g/mL
𝑫 = 𝑴
𝟒𝟐𝟓 𝒈𝒓𝒂𝒎𝒔
= = 𝟖. 𝟖𝟓 𝒄𝒎𝟑
𝑽
𝟒𝟖. 𝟎 𝒄𝒎𝟑
The cup is full of copper because the density is closest to the density of copper.
20. What is the density of a piece of wood that has a mass of 25.0 grams and a volume of 29.4 cm3?
𝑫 = 𝑴
𝟐𝟓. 𝟎 𝒈𝒓𝒂𝒎𝒔
𝒈
= =
𝟎.
𝟖𝟓
𝑽
𝟐𝟗. 𝟒 𝒄𝒎𝟑
𝒄𝒎𝟑
21. What is the conservation of mass?
Mass is neither created nor destroyed during a chemical reaction. Mass in = Mass out.
22. Copper Chloride dissolves in water. What separation technique would you use to separate
them?
Copper Chloride is a solid and water is a liquid. Evaporation would be the best technique.
23. You place small beads in water. What two separation techniques could you use to separate
them?
Small beads are not soluble in water. The beads are a solid and water is a liquid. Filtration or
hand separation would work.
24. What is and when would you use volume by difference?
Volume by difference enables you to determine the volume of an irregular object. Fill a
graduated cylinder halfway with water. Write down the volume (V1). Place the object in the
graduated cylinder. Write down the volume of the water with the object (V2). The volume of
the irregular object is V2 – V1.
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