AnswersChemistry 1A - Mr. KaanLab: Ionic and Covalent Bonds

Lab: Ionic and Covalent Bonds Answers

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1
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Which substances were ionic?

A
Oil
B
cornstarch
C
sodium chloride
D
sodium bicarbonate
2
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What properties would you expect for CCl4? Select all that apply.

A
It is likely a gas or liquid at room temperature.
B
It is likely soluble in water.
C
It will likely light up a bulb in a conductivity apparatus.
D
It will likely have a high melting point.
4

What properties would you expect for CaO? Select all that apply.

A
It is likely a gas or liquid at room temperature.
B
It is likely soluble in water.
C
It will likely light up a bulb in a conductivity apparatus.
D
It will likely have a high melting point.
6

How does a conductivity apparatus test whether a solution has ionic or covalent substances in it?

A
It fails to light up except in homogeneous solutions.
B
It lights up when the leads touch each other.
C
Ions complete the flow of electrons to form a circuit.
D
The covalent substances bond to the leads to prevent the lightbulb from lighting.
8

Identify all actions that you should take if you have chipped or broken glassware.

A
Notify your teacher.
B
Have the custodian clean it up after school.
C
Sweep it into a corner.
D
Notify classmates.
E
Dispose of it in the designated glass waste area.
10

If a substance is ionic, then it likely will

Answer:

be a crystalline solid, be soluble in water, and conduct electricity.

11

Select all properties you listed for ionic.

A
be a crystalline solid
B
be soluble in water
C
conduct electricity
13

Select all properties you listed for covalent.

A
be a liquid or gas
B
not be soluble in water
C
not conduct electricity
14

If a substance is covalent, then it likely will

Answer:

be a liquid or gas, not be soluble in water, and not conduct electricity.

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