Chemistry Of Materials (Medium) Question Preview (ID: 22070)
Answer The Following Questions To Study For Your Unit Test.
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An element contains
a) One kind of atom
b) Two or more kinds of atoms
c) One kind of molecule
d) Two or more kinds of molecules
Which of the following statements about dilution as an approach to handling toxic waste is TRUE?
a) Dilution removes the toxic materials in liquid wastes
b) Diluting a liquid until it is clear and colorless means that the liquid is safe for disposal in local sewers
c) Dilution lowers the concentration of toxic materials in liquid wastes
d) All of the above
Most elements are what phase at room temperature?
a) Solid
b) Liquid
c) Gas
d) Plasma
The compound sucrose has a chemical formula of C12H22O11. How many elements are in one molecule of sucrose?
a) 3
b) 12
c) 22
d) 45
Which of the following is a compound?
a) N
b) Na
c) CO
d) Ca
Plastics are made from
a) Hydrogen and carbon compounds
b) Silicon sand, Soda ash, and limestone
c) Bauxite
d) None of the above
Which of the following is a chemical property of a substance? The substance
a) Conducts electricity
b) Reacts with hydrochloric acid
c) Scratches glass
d) Is denser than water
The life cycle of a product refers to
a) The amount of time the product is expected to last
b) The stages from when the product is made until it is disposed of
c) The guarantee that the manufacturer provides
d) How the product is used in its life
Which of the following is a list of physical properties?
a) Density, conductivity, reaction with acid
b) Flexibility, reaction with hydrochloric acid, color
c) Temperature change when a chemical is added, texture, density
d) Electrical conductivity, hardness, ability to transmit light
Which of the following is NOT a property of a material?
a) Flexibility
b) Luster
c) Shape
d) Texture
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