Question

Write true or false.
1. In general, metals have higher boiling points
than nonmetals.
2. Water vapour never changes directly into ice.
3. Unlike liquids, gases do not flow.
4. A gas can be liquefied under pressure.
5. Energy is released when a vapour condenses.
6. Solid carbon dioxide is called dry ice.​

Answer 1

1. In general, metals have higher boiling points

than nonmetals.    true

2. Water vapour never changes directly into ice.  false

3. Unlike liquids, gases do not flow.  false

4. A gas can be liquefied under pressure.  true

5. Energy is released when a vapour condenses.  false

6. Solid carbon dioxide is called dry ice.​ true

Answer 2

Answer:

1. true.

2.true

3.false 4th hey flow so only they are called fluids

4.true and this process is called liquefaction

5.true.

6.true

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