changing state PASD1

Fay heated some ice until it melted. She then heated the liquid water, from the melted ice, until it boiled. Fay measured the temperature of the water as it was heated. She used her results to draw this graph.

Which parts of the graph, show that the water was change into steam?

• AB

• BC

• CD

Iron has a melting point of 1538°C and a boiling point of 2862°C.

The state of matter of iron at 100°C is____.

• solid

• liquid

• gas

Iron has a melting point of 1538°C and a boiling point of 2862°C.

The state of matter of iron at 2000°C is ____.

• solid

• liquid

• gas

Here is a picture of water cycle. The changing state occur in B is ____.

• melting

• evaporation

• condensation

• freezing

If a gas cools down it changes into a liquid in a process called.....

• condensation

• evaporation

• Boiling

• Freezing

Water in the gaseous state is....

• water vapour

• Ice

• gas

• dewdrops

The boiling point of water is

• 0⁰ C

• 100⁰ C

• 32⁰ C

• 4⁰ C

How quickly evaporation takes place is called

• The rate of evaporation

• Boiling point

• Melting point

• Freezing point

Boiling means ____

• The change from gas into liquids.

• The change from solids into liquids.

• The change fro liquids into solids.

• The change of water into gaseous state at 100°C.

What can we do to get the salt from seawater?

• evaporate the seawater

• condense the steam of seawater

• melt the salt

• cool the seawater