Grade 7 - States of Matter - Exercise

Which change of state occurs when particles in a solid begin to move slowly past each other?

• Boiling

• Condensing

• Melting

• Subliming

Tags

NGSS.MS-PS1-4

When the temperature of a liquid is increased a little, what happens to its particles?

• They move so far apart becoming gas

• They come close together

• They start vibrating more

• They stop vibrating

Tags

NGSS.MS-PS1-4

When a beaker of water is heated its volume increases a little. What is happening to the particles in the liquid?

• They are moving faster

• They are getting smaller

• They are getting bigger

• They are moving slower

Tags

NGSS.MS-PS1-4

An example of a substance that is freeze is…

• milk

• Fog

• Steam

• Ice cube

Tags

NGSS.MS-PS1-4

All solids, liquids and gases are made up of...

• Volumes

• Particles

• Colors

• Temperature

Tags

NGSS.MS-PS1-1

What change of state do you see from this picture?

• solid to liquid

• liquid to gas

• gas to solid

• gas to liquid

what change of state do you observe when water vapor came into contact with the lid?

• Freezing

• Melting

• Evaporation

• Condensation

This is condensation. The change of this state occurred because the water vapor...

• was less exposed to the sun

• was confined by a lid

• came into contact with a cool surface

• was trapped and heated

In the gas state, the water particles...

• move quite rapidly and sometimes collide

• move more slowly than in a liquid water

• hover and stick to each other

• never come near to each other

unlike liquid water, water vapor can spread everywhere because the particles...

• move freely in all direction

• are smaller than they were in the liquid

• are not in any pattern

• are larger than they were in the liquid