A saturated solution is one in which no more solute can dissolve in the solvent at a given temperature.

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

A line that depicts the trend of scattered data plots on a graph.

Saturated solutions

Science

Pure substances

Mixtures: choosing equipment

Mixtures: equipment diagrams

Mixtures and solutions

Diffusion

Dissolving

Variables

Dissolving: scientific methods

Solubility: practical

Solubility: analysis

In the Separation Techniques unit, pupils will build on their knowledge of solutions to learn about methods for separating mixtures, including filtration, evaporation, distillation, and chromatography.

In the Solid, Liquid and Gas States and Changes of State unit, pupils learned to categorise substances into the solid, liquid or gas state and explored particle behaviour during changes of state.

This unit explores the concepts of pure substances, mixtures, and diffusion in liquids and gases. It emphasises accuracy, precision, and the use of appropriate techniques during investigations. The focus is on making predictions and recording reliable observations.

Solutions

What observation indicates that a solution has become saturated?

A line of best fit on a solubility graph can be used to predict the solubility of a solute at temperatures not directly tested.

When solutes become insoluble as a solution cools, it may lead to the formation of...

The process of a solute dissolving in a solvent until no more can dissolve at a particular temperature is known as reaching...

Describes something that can dissolve in a solvent.

Describes something that cannot dissolve in a solvent.

A solution that cannot dissolve any more solute.

The mixture formed between solute and solvent.

A measure of how well something dissolves.

A substance that can dissolve to form a solution.

Match the following key terms to their descriptions.

Use the graph to determine the mass (in grams) of sugar that will dissolve in 100 cm³ of water at 85℃. (Give the number to the nearest hundred).

What happens to most solutes as the temperature of a solvent increases?

When drawing a graph in science, which of the following graphs have their variables plotted correctly?

What is typically used in science to predict values from a graph?

Solubility is a description of how well a solvent can dissolve into a solute.

IV: hair colour   |   DV: number of students

IV: mass of sugar  |   DV: time taken to dissolve

What type of graph is most appropriate for showing the relationship between suggested variables? KEY: Independent variable (IV)  |  Dependent variable (DV)

The term for the measure of how much a substance can dissolve in a given amount of solvent at a specific temperature is...

Saturated solutions

Lesson outcome