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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
One kind of atom
B
Two or more kinds of molecules
C
One kind of molecule
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
All of the above
B
Dilution lowers the concentration of toxic materials in liquid wastes
C
Diluting a liquid until it is clear and colorless means that the liquid is safe for disposal in local sewers
D
Dilution removes the toxic materials in liquid wastes
3) Most elements are what phase at room temperature?
A
Plasma
B
Gas
C
Solid
D
Liquid
4) The compound sucrose has a chemical formula of C12H22O11. How many elements are in one molecule of sucrose?
A
22
B
12
C
45
D
3
5) Which of the following is a compound?
A
N
B
Na
C
Ca
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
Reacts with hydrochloric acid
B
Scratches glass
C
Conducts electricity
D
Is denser than water
8) The life cycle of a product refers to
A
The amount of time the product is expected to last
B
How the product is used in its life
C
The guarantee that the manufacturer provides
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
Flexibility, reaction with hydrochloric acid, color
B
Density, conductivity, reaction with acid
C
Electrical conductivity, hardness, ability to transmit light
D
Temperature change when a chemical is added, texture, density
10) Which of the following is NOT a property of a material?
A
Luster
B
Shape
C
Flexibility
D
Texture
*select an answer for all questions
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