Properties of materials revision

Which mixture can be separated by filtering?

• Rocks and water

• Oats and sugar

• Oil and vinegar

• Rice and flour

Miss Maxwell stirs a teaspoon of sugar into hot water. The sugar dissolves. She wants to carry out an experiment to separate the sugar and water again. Which method should she use?

• Separating with a magnet

• Evaporating

• Filtering

• Sieving

What will happen if a salt solution is left in the sun for a week?

• The water and the salt will evaporate.

• The salt will soak up the water.

• The water will evaporate leaving the salt behind.

• The salt will evaporate leaving the water behind.

Which of these cannot be separated using filtration? There is more than one answer.

• Rice and flour.

• Rocks and flour.

• Oats and Sugar.

• Water and oats.

Which of these cannot be separated using sieving?

• Rice and water.

• Pasta and sauce.

• Lemonade and lemons.

• Oil and orange juice.

Which of these cannot be separated using evaporation?

• Salt and water.

• Sugar and water.

• Coffee and water.

• Oats and water.

Which of these cannot be separated using magnets? There is more than one answer.

• Rocks and water.

• Rice and paperclips.

• Flour and rice.

• Magnets and marbles.

Which of these changes are reversible? There is more than one answer.

• Baking a cake.

• Freezing juice to make an ice lolly.

• Rusty metal.

• Melting chocolate.

Which of these changes are NOT reversible? There is more than one answer.

• Cooking an egg.

• Rusty on a metal bike chain.

• Making toast.

• Salt dissolved in water.

Which of these are solutions? There is more than one answer.

• Salt dissolved in water.

• Rocks mixed in water.

• Sugar dissolved in water.

• Spaghetti and meatballs.