A solute is a substance that has dissolved into a solvent.

A solvent is a substance into which a solute dissolves.

When a solute dissolves, it is described as soluble.

When a solute and solvent combine, a solution forms.

The combined mass of starting materials equals the combined mass of the end products.

Mixtures and solutions

Science

In the Separation techniques unit, they will build on this knowledge to learn about separation techniques in terms of the particle model.

In the Y5 Properties, changes and separating materials unit, pupils learnt about mixtures, including solutions, and separation techniques including filtering and evaporation.

Solutions

Physical activity and equipment requiring safe use

Select the two units used to measure mass.

Sugar will dissolve in tea. Sugar is {{}} in tea.

If salt is dissolved in water. How would you describe the solution formed?

a liquid in which a substance can dissolve

formed when a substance dissolves in a liquid

unable to dissolve in a particular liquid

If 52.3 g of copper sulfate, a soluble substance, is added to some water and the final mass of the solution is 97.6 g, what was the mass of water?

A cross is drawn on two white tiles using marker pen. The pen's ink is soluble in acetone and insoluble in water. What will you see if the left is wiped with acetone and the right is wiped with water?

Which picture shows an insoluble substance?

Sugar dissolves in water, so sugar can be described as a {{}} solid.

A {{}} is a material formed from two or more substances which can be physically separated.

I'm think that might be a liquid mixture.

I'm fairly certain this shows an impure solid.

Some students have been asked to describe this diagram using key terms.  Who has used their key words correctly?

Melting is what happens when a substance disappears.

Melting occurs when solid particles become more regularly arranged.

Melting is the process of a substance disappearing in a liquid.

Melting occurs when solid particles become more irregularly arranged.

Melting is a reversible, physical change.  Which of the following statements is also true about melting?

Content guidance

Risk assessment required - equipment

Adult supervision required

Starter Quiz