Answers26-27 CFISD TX-Chemistry A CRPeriodic Trends

Periodic Trends Answers

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What is the formula for ammonium sulfate?

A
NH4SO4
B
Na2SO3
C
(NH4)2SO4
D
Na2SO4
2
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What is the formula for potassium hydroxide?

A
KOH
B
K2O
C
PtOH
D
(Pt)2O
3

Consider the compound Al(OH)3. What type of solid does it form?

A
crystal lattice
B
glass
C
metal
D
molecule
4

Lattice energy is an estimate of the bond .

A
conductivity
B
group
C
length
D
strength
5

How many hydroxide ions are bonded to each aluminum ion?

A
1
B
2
C
3
D
4
6

Which of the following are characteristics of ionic compounds? Check all that apply.

A
have high melting and boiling points
B
are hard
C
can exist as solids, liquids, or gases at room temperature (25ºC)
D
are good conductors of electricity when dissolved in water

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