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Chemistry Of Materials (Medium)
Test Description: Answer the following questions to study for your unit test.
Instructions: Answer all questions to get your test result.
1) An element contains
A
Two or more kinds of molecules
B
One kind of molecule
C
One kind of atom
D
Two or more kinds of atoms
2) Which of the following statements about dilution as an approach to handling toxic waste is TRUE?
A
Diluting a liquid until it is clear and colorless means that the liquid is safe for disposal in local sewers
B
Dilution removes the toxic materials in liquid wastes
C
Dilution lowers the concentration of toxic materials in liquid wastes
D
All of the above
3) Most elements are what phase at room temperature?
A
Solid
B
Gas
C
Liquid
D
Plasma
4) The compound sucrose has a chemical formula of C12H22O11. How many elements are in one molecule of sucrose?
A
45
B
12
C
22
D
3
5) Which of the following is a compound?
A
Ca
B
N
C
Na
D
CO
6) Plastics are made from
A
None of the above
B
Silicon sand, Soda ash, and limestone
C
Bauxite
D
Hydrogen and carbon compounds
7) Which of the following is a chemical property of a substance? The substance
A
Scratches glass
B
Reacts with hydrochloric acid
C
Conducts electricity
D
Is denser than water
8) The life cycle of a product refers to
A
The guarantee that the manufacturer provides
B
How the product is used in its life
C
The amount of time the product is expected to last
D
The stages from when the product is made until it is disposed of
9) Which of the following is a list of physical properties?
A
Electrical conductivity, hardness, ability to transmit light
B
Density, conductivity, reaction with acid
C
Flexibility, reaction with hydrochloric acid, color
D
Temperature change when a chemical is added, texture, density
10) Which of the following is NOT a property of a material?
A
Shape
B
Texture
C
Flexibility
D
Luster
*select an answer for all questions
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