Discover the Effect of Mixing Substances

In this worksheet, students will be offered a variety of scenarios in which substances are mixed together, asking them the effects of such mixing and whether the change is permanent or not.

Key stage: KS 2

Year: Year 5 Science worksheets

Curriculum topic: Properties and Changes of Materials

Curriculum subtopic: Dissolving and Solutions

Difficulty level:

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Worksheet Overview

Barney and Tim are finding out what happens when certain substances are mixed together.

They are interested in observing any changes and trying to find out whether the change is permanent (irreversible) or temporary (reversible).

Stirring

They start by drawing up a chart to write their results in:

NAME	MIXED WITH	RESULT	CHANGE?
Sand	Water	Did not dissolve	Reversible
Salt	Water		Reversible
Sugar	Water	Dissolved - clear
Instant coffee	Water	Dissolved - brown	Irreversible
Andrews salts	Water	Fizzed - gas produced	Irreversible
Hot chocolate powder	Water	Did not dissolve	Reversible
Bicarb. of soda	Vinegar	Fizzed - gas produced	Irreversible
Boiled sweet	Water	Dissolved - pink	Reversible
Dirty 2p coin	Lemon juice	Coin clean/juice dirty	Irreversible

Now that they have completed their chart, they need your help in sorting out their observations - are you up for that?

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girl writing

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