Science Revision (properties and changes in materials)

Different substances are stirred into four beakers of water.

Which contains a solution?

• Sand and water

• Stones and water

• Oil and water

• Salt and water

True or false?

Melting an ice-lolly is an irreversible change.

• True

• False

True or false?

Toasting bread is an irreversible change.

• True

• False

True or false?

Water vapour condensing on a window is an irreversible change.

• True

• False

True or false?

Frying an egg is an irreversible change.

• True

• False

Which would be the most effective method for separating:

Oil and water?

• Sieving

• Filtering

• Evaporating

• Magnetising

Which would be the most effective method for separating:

Soil and rocks?

• Sieving

• Filtering

• Evaporating

• Magnetising

Which would be the most effective method for separating:

Water and iron filings?

• Sieving

• Filtering

• Evaporating

• Magnetising

Which would be the most effective method for separating:

Meatballs and sauce?

• Sieving

• Filtering

• Evaporating

• Magnetising

Which part of the water cycle involves:

Water from rivers and seas turning into water vapour?

• Evaporation

• Condensation

• Precipitation

• Collection