grade 5 , con 6 , lesson 2

Freezing of liquid chocolate needs......... temperature.

• high

• low

• warm

• very high

The reversible changes of matter are usually..........

• physical changes only.

• chemical changes only.

• both physical and chemical changes.

• neither chemical nor physical changes.

In freezing process, the particles of matter lose energy and.............

• move with high speed.

• move with very high speed.

• move with low speed.

• don't move.

Condensation changes the matter from........... State to ........... State

• solid-liquid

• liquid - gas

• gas - liquid

• liquid - solid

When we boil water, it will...........

• condense.

• freeze.

• melt.

• evaporate.

When ice cubes gain ... energy, they turn into water.

• sound

• potential

• electrical

• thermal

Physical changes of matter include...........

• melting only.

• freezing only.

• both melting and freezing.

• neither melting nor freezing.

Increasing the temperature of a matter means that its particles..............

• have low energy.

• have high energy.

• have very low energy.

• don't have energy.

Ice is turned into ...........when its temperature is between 0°C and 100°C.

• solid state

• liquid state

• gas state

• water vapor

When the temperature of water is decreased below 0°C, it will turn into.............

• water vapor.

• clear water.

• colored water.

• ice.