States of Matter Year 4/5

What are the three states of matter?

• Solid, Liquid, Gas

• Hard, Soft, Medium

• Transparent, Opaque, Translucent

• Hot, Cold, Warm

Which of these is a solid?

• Water

• Air

• Ice cube

• Steam

Which of the following is an example of a reversible change?

• Burning wood

• Rusting iron

• Dissolving sugar in water

• Cooking an egg

What is the process of a liquid turning into a gas?

• Freezing

• Evaporation

• Melting

• Cooling

What happens when an ice cube is melted by a tea light?

• The energy in the molecules of ice goes up

• The solid turns into a liquid water.

• The molecules loosen their grip on each other

• Ice cube is solid

• Heat is added to ice

What is the difference between dissolving and melting?

• Dissolving involves a change in color, while melting involves a change in shape.

• Dissolving forms a solution, while melting changes the state from solid to liquid.

• Dissolving makes a material disappear, while melting makes it larger.

• Dissolving is a permanent change, while melting is temporary.

Which of the following materials is NOT likely to dissolve in water?

• Salt

• Flour

• Metal spoon

• Icing sugar

Which of the following is an irreversible change?

• Freezing water

• Melting chocolate

• Burning a candle

• Dissolving sugar

What happens when vinegar is mixed with bicarbonate of soda?

• It creates a sweet smell.

• It forms carbon dioxide gas.

• It turns into a solid.

• It changes color to blue.

Put these in the RIGHT ORDER: How does water evaporate?

• Water turns into invisible gas

• Water starts as liquid

• Water disappears as gas

• Water gets heated