A process during which a solute's particles separate and spread throughout the particles of a solvent.

Solubility refers to how well a solute is able to dissolve in a solvent to create a solution.

A variable is anything that can change in an investigation.

Something that does not fit an obvious trend.

Solubility: practical

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

In any investigation, the factor that is changed by the scientist is called the {{}} variable.

Stop the timer when the solute is fully dissolved (no longer visible).

Put the steps in the correct order for investigating how temperature affects speed of dissolving (starting with adding the solvent to the beaker):

Process where solute particles spread throughout solvent. 

How well a solute is able to dissolve in a solvent.

Anything that can change in an investigation.

To increase the temperature of the solvent.

To help the solute dissolve more uniformly.

What is the purpose of stirring a solution in a solubility experiment?

If the size of the solute pieces is decreased in a solubility experiment, the solute will dissolve...

When a solute completely dissolves in a solvent, the resulting mixture is called a...

The random motion of particles in a fluid.

The movement of particles in a pure substance.

Match the measurement unit to what it measures:

A combination of substances with fixed boiling points.

A combination of two or more substances that can be physically separated.

The term for a solid that dissolves in a solvent to form a solution is called a...

The mass of solute and solvent equals the mass of the solution.

The mass of the solution is always more than its components.

The mass of the solution changes with temperature.

What does the conservation of mass mean in the context of making a solution?

When an insoluble solid is added to a liquid, a common observation is that the substance {{}} to the bottom of the container over time.

Content guidance

Risk assessment required - equipment

Adult supervision required

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