English National Curriculum - Science Science

1. Define and identify pure substances and mixtures

Mission Objectives

Explain what a pure element, a pure compound, a mixture of elements, and mixture of compounds are

Summarise what the uses of a pure element, a pure compound, a mixture of elements, and mixture of compounds are

Use physical methods to distinguish between pure substances and mixtures

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Keywords

Words and meanings to learn

element

a substance which only contains one type of atom

mixture

a substance that has more than one type of atom or molecule in it that are not chemically bonded to each other

chemical bond

something that sticks two atoms together that can only be broken through a chemical reaction

pure compound

a substance which contains only one type of compound

physical property

a property that can be observed or measured; hardness, colour, and melting point are examples of physical properties

This lesson has been written by

Dr Shannon Weldon

Shannon started her journey with Developing Experts by completing PHD placement while studying for her Doctorate in Developmental Biology at the University of East Anglia. Shannon has since joined the team full-time as a Project Manager working with the company's industry partners. Shannon knows a lot about chickens!

Dr Peter Klappa

Peter Klappa studied Biology (BSc Hons and MSc) at the Ludwigs-Maximilian University in Munich, Germany, where he also obtained his PhD in molecular and cellular biology. He is a National Teaching Fellow and a Senior Fellow of the Higher Education Academy. As a trained Biology and Chemistry teacher, Peter has taught sciences for over 30 years, both at pre- and post-entry to university. For his excellence in teaching, Peter has received numerous awards and prizes and was nominated for the Teacher of the Year award by the Higher Education Academy in 2015 and 2019.

Required Resources

Resources: Whiteboard; Periodic Table of the Elements;  various samples of pure substances and mixtures (e.g. metal screws, wood shavings, water, salt, sugar, sand and water); lab equipment (e.g. test tubes, beakers, droppers) and building block.

Core Handout: A series of instructions to help with the Mission Assignment, support and challenge tasks. 

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