Tennessee Science Grade 8

Chapter 12: Chemistry and Technology

TCAP Preparation

1
Which of the following best describes a material that is malleable?
A)can be hammered or rolled into sheets
B)attracted and repelled by magnets
C)easily penetrated by electrons
D)reacts easily with other compounds
2
Which of these is a good property for a material that needs to be easily dissolved in hot water?
A)high density
B)low density
C)low solubility
D)high solubility
3
What is the name of the polymer shown in the illustration? [insert art 682_STP_Questions_ta01 illustration of polyvinyl chloride, p. 443]
A)high-density polyethylene
B)low-density polyethylene
C)polyvinyl chloride
D)polyvinyl hydride
4
Which term is used for a mixture of a metal and one or more other elements?
A)ceramic
B)alloy
C)composite
D)polymer
5
The graph above shows the melting points and boiling points of different compounds. Which pair of compounds could be used for a new product that must be a gas at 300ºC? [insert art 682_STP_Questions_ta02 graph of melting/boiling points, p. 462]
A)compounds 2 and 6
B)compounds 1 and 4
C)compounds 4 and 5
D)compounds 2 and 5
6
Which compound has the smallest temperature range at which it is a liquid? [insert art 682_STP_Questions_ta02 graph of melting/boiling points, p. 462]
A)compound 1
B)compound 5
C)compound 6
D)compound 4
7
A certain type of stainless steel is 73.0% iron. What is the mass composition of iron in a 625-g sample of the material?
A)147 g
B)169 g
C)456 g
D)476 g
8
Which of the following is a chemical property?
A)density
B)melting point
C)solubility
D)flammability
9
Which of the following terms refers to the amount of mass in a certain volume?
A)density
B)conductivity
C)reactivity
D)solubility
10
During which development stage is a full-scale model of a product made?
A)computer simulation
B)pilot plant
C)prototype
D)quality control
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