INTERACTION OF MATTER

the temperature at which a solid starts to melt / a solid changes into a liquid is ..............................

• Boiling point

• melting point

• gains heat

• water vapour.

The melting point of ice is ......................................... and stays at this until all the ice has melted into water.

• 0 degree celcius

• 10 degree celcius

• 100 degree celcius

• 50 degree celcius

Boiling point is the temperature at which ..........................

• the temperature at which a liquid starts to boil

• a solid starts to melt.

• a liquid gains heat to change to a gas

• the temperature at which a liquid changes into a gas

Boiling is .........................................

• when a liquid gains heat to change to a gas.

• when a solid loses heat to change to a liquit

The boiling point of pure water is ................................ °C

The temperature of boiling water remains at 100 degree celcius untill all the water changed into ......................

Use the words to complete the sentences about the change in temperature of

water when it is heated to it boiling point.

all, passes, increases, seventh, stay, vapour

As the time _______, the temperature of water

_______. The temperature stops increasing at

the _______-minute. This will _______ the

same until _______ the water has turned into

water _______.

Freezing happens when .....

• liquid changes into a solid

• solid changes into a liquid

• solid changes inti a gas

• liquid changes into gas

When water freezes it ................., meaning it takes up ....................... space and this means that the particles in ice are ................... apart than in liquid water

used to give a measurement of how hot or cold

something is a.........................