substance formed when a solute dissolves into a solvent

a substance that has dissolved into a solvent

a substance into which a solute dissolves

the amount of a solute dissolved in a certain volume of solvent

a low concentration of a solute in a solution

Concentration of solutions

Combined science

In the Electrolysis unit, pupils will build on their understanding of chemical reactions to explore the process of electrolysis and its applications.

In the Acids and Bases unit, pupils learned about the properties of acids, bases, and alkalis, and the reactions between them to form salts and water.

This unit explores empirical formulae, balanced chemical and ionic equations, gas identification, acid reactions, and pH as a measure of hydrogen ion concentration. It covers separation techniques and focuses on planning experiments, accurate measurements, safety, and communicating findings.

Making salts

Depiction of war, threats of war, death or the aftermath of war.

Depiction or discussion of violence or suffering

the mass of solute dissolved in a specific volume of solvent

What does the concentration of a solution refer to?

What unit is commonly used to measure the concentration of a solution?

How can you increase the concentration of a solution?

If 10 grams of salt is dissolved in 500 cm³ of distilled water, what is the concentration in g/dm³?

How much distilled water needs to be added to 1 dm³ of a 40 g/dm³ solution to dilute it to 20 g/dm³?

Match the units to the correct measurement.

What is the state symbol for water at room temperature?

Match the definition with the correct keyword.

Solution 1 contains 10 g of solute dissolved in 100 cm³ of water.

Solution 2 contains 8 g of solute dissolved in 100 cm³ of water.

Solution 3 contains 5 g of solute dissolved in 100 cm³ of water.

Solution 4 contains 2 g of solute dissolved in 100 cm³ of water.

Solution 5 contains 0.5 g of solute dissolved in 100 cm³ of water.

Which solution will have the highest concentration?

Solution A has a concentration of 0.01 g/dm³

Solution C has a concentration of 0.1 g/dm³

Solution D has a concentration of 1 g/dm³

Solution B has a concentration of 100 g/dm³

Order these solutions from the least to the most concentrated.

Content guidance

Depiction or discussion of violence or suffering

Adult supervision recommended

This lesson will be removed by end of Summer Term 2025.

Concentration of solutions

Lesson outcome

Content guidance

This lesson will be removed by end of Summer Term 2025.