Metallic Bonds — Unit test Answers

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22
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Anjuli is looking at four different metal samples on the counter. Three are solid, and one is a liquid. Which statement about the liquid metal is most likely true?

A
The liquid metal is gold.
B
The liquid metal is mercury.
C
The liquid metal was superheated.
D
The liquid metal was supercooled.
23

Why can a hydrogen atom form a covalent bond without fulfilling the octet rule?

A
Hydrogen’s valence shell can hold only up to two electrons.
B
Hydrogen’s valence shell never needs to be full to be stable.
C
The octet rule only applies to bonds formed by trading electrons.
D
The octet rule only applies to alkali metals and alkaline earth metals.
25

Nickel and gold combine to make white gold. Which best dscribes white gold?

A
alloy of nickel and gold
B
element of nickel and gold
C
atom of nickel and gold
D
pure metal of nickel and gold

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