Loading please wait

The smart way to improve grades

Comprehensive & curriculum aligned

Try an activity or get started for free

Find Out about Separating Substances at the Seaside

In this worksheet, students will be challenged to consider different aspects of a separation, what equipment will be needed, what steps should be taken and to predict the outcome.

'Find Out about Separating Substances at the Seaside' worksheet

Key stage:  KS 2

Year:  Year 5 Science worksheets

Curriculum topic:   Properties and Changes of Materials

Curriculum subtopic:   Separating Mixtures

Difficulty level:  

Worksheet Overview

 In this activity, we're going to take a journey to the seaside with Amy and Sam to investigate seawater: what it's made of and how to separate its various constituents.




A bucketful of seawater contains lots of things: water, salt, seaweed and sand, just for starters!


Think: how can we separate the big bits, like seaweed?
The easiest way is to use a filter. A filter works like a fine sieve, trapping bits (like seaweed) that are larger than the tiny holes in the filter paper.

Filtering an undissolved solid from a liquid


Think: how can we separate the salt from the seawater?
If we evaporate the water away, by heating the seawater, then the salt is left behind. The salt is a dissolved solid in the seawater and only the liquid water evaporates away.


Think: how can we get drinking water from seawater?
If we boil the seawater, the water evaporates away as steam. If we can collect the steam and cool it down, it condenses back into pure water that's safe to drink.


See if you can use these ideas to help Amy and Sam as they investigate seawater.



What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started

Try an activity or get started for free