Revising Materials And Their Structure

Particles in these three pictures represent three states of iron.

Choose one option below which fits the letters in the picture.

• A -- liquid iron.

  B -- gaseous iron.

  C -- solid iron.

• A -- gaseous iron.

  B -- liquid iron.

  C -- solid iron.

• A -- solid iron.

  B -- liquid iron.

  C -- gaseous iron.

• A -- solid iron.

  B -- gaseous iron.

  C -- liquid iron.

Choose three statements below which describe how particles are arranged in ice.

• Particles are arranged in a regular pattern.

• Particles are far away from each other.

• Attractive forces between particles are very strong.

• Particles slide past each other.

• Particles cannot move. However, they can vibrate.

Choose three statements below to describe how particles are arranged in cooking oil.

• Particles cannot move, but they can vibrate.

• Particles do not touch each other.

• Particles can slide past each other.

• Particles can move and vibrate.

• Particles are close, but not in a regular pattern.

Choose three statements to describe how particles are arranged in air.

• Particles do not touch each other.

• Particles move very fast.

• Particles are arranged in a regular pattern.

• Particles do not move, but they can vibrate.

• Attractive forces are almost absent.

Which statements below might be properties of solids? Choose two options.

• Shape doesn't change.

• Easily compressed.

• Can flow.

• Shape is easily changed.

• Cannot be poured.

Which statements below might be properties of liquids? Choose two options.

• Can be poured.

• The shape is constant.

• Easily compressed.

• Don't keep the shape.

Which statements below might be properties of gases? Choose three options.

• Can be poured

• Don't keep the shape.

• The shape is constant.

• Easily compressed.

• Cannot be poured.

What is the volume of oil in the picture?

• 22 ml (we should look at the upper part of the meniscus).

• 21 ml (we should look at the middle of the meniscus).

• 20 ml (we should look at the bottom of the meniscus).

Choose one option to fill the gaps in the sentences below.

The process when liquid changes to gas is called ......... (A). However, if the gas is cooled, it will turn back into liquid -- we call this process ......... (B).

• A -- condensation.

  B -- evaporation.

• A -- evaporation.

  B -- freezing.

• A -- evaporation.

  B -- condensation.

• A -- boiling.

  B -- melting.

Choose one option to fill the gaps in the sentence below.

When you heat solid chocolate in a microwave, it turns into liquid -- we call this process ......... (A). If you pour liquid chocolate in a mold and leave in a freezer for an hour, it will become solid. We call this process ......... (B).

• A -- melting.

  B -- cooling.

• A -- melting.

  B -- freezing.

• A -- evaporation.

  B -- condensation.

• A -- freezing.

  B -- melting.