Study Guides

Unit Summary

This unit covers separating materials using techniques such as filtering and evaporation. It focuses on planning scientific enquiries, recognising and controlling variables, taking accurate measurements, recording complex data, and presenting findings with conclusions, and explanations.

Lesson Summary

You will learn to use a hand lens or microscope to observe and compare rock salt and table salt.

Key Notes

• The salt people put on their food or in their cooking is usually a type of salt called table salt.
• Table salt has a wide range of uses.
• Table salt can be obtained through two main methods: mining underground salt deposits and evaporating seawater.
• Different types of salt can be observed and compared using a hand lens or microscope.

Vocabulary To Learn

• table salt: The salt people put on their food or in their cooking is usually a type of salt called table salt.
• processed: If something is processed, it is changed from its natural form by people.
• salt mines: Salt mines are areas of Earth from which rock salt is extracted. These are often underground.
• rock salt: Rock salt is the name given to salt before it is processed.
• microscope: A microscope is a piece of equipment that magnifies very tiny objects.

Common Mistakes To Avoid

• Pupils may think that there is only one type of salt and that it all comes from the sea.

3 Quick Questions (With Answers)

More Lessons In This Unit

• The effect of adding salt to ice: do and review (non-statutory) Study Guide
• The effect of adding salt to ice: plan (non-statutory) Study Guide