Data that can only take distinct values or is a category, e.g. shoe size, number of people.

Data that can be a value within a range, e.g. temperature, mass, height, etc.

Chart showing solid columns to present data; usually used when one variable is discrete.

A graph in which two continuous variables are plotted.  It is used to find if a relationship exists between the variables.

A line of best fit is drawn through a set of plotted points on a scatter graph, to best show the trend in the data displayed.

Solubility: analysis

Science

Pure substances

Mixtures: choosing equipment

Mixtures: equipment diagrams

Mixtures and solutions

Diffusion

Dissolving

Variables

Dissolving: scientific methods

Solubility: practical

Saturated solutions

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

Data that can only take specific, distinct values is called {{}} data.

A scatter graph is the most appropriate choice for representing data when both variables are discrete. True or false?

The discovered relationship between the variables

Which of the following should always be included when writing a conclusion to an investigation?

When drawing a line of best fit on a graph, any results that are {{}} will be ignored.

What type of graph is typically used when one variable is discrete?

Which of the following graphs below show a suitable line of best fit based on the data plotted?

It is kept constant throughout the experiment.

It is what the experimenter changes to observe an effect.

It changes in response to another variable.

What is the role of an independent variable in an experiment?

To ensure data is organised and easy to analyse.

What is the primary reason for recording data in a table during an experiment?

When results from an experiment are reproduced by different people or in different places, it is known as...

A well-designed scientific experiment should yield the same results regardless of who conducts it. True or false?

A piece of data that does not fit an obvious trend is known as...

Solute particles spread throughout the particles of solvent.

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

Anything that can change in an investigation.

Mixture of an insoluble solid and liquid that will settle.

A substance that can dissolve in a specific solvent.

A substance that cannot dissolve in a specific solvent.

Match the keywords to the descriptions below.

Starter Quiz

What is the role of an independent variable in an experiment?