English National Curriculum - Science Science

10. Explore Group 7 (The Halogens) Part 3

Mission Objectives

Describe and explain how the reactivity of Group 7 elements changes down the group

Describe how a more reactive halogen can displace a less reactive halogen from an aqueous solution of its salt

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Keywords

Words and meanings to learn

reactivity

The measurement of how easily two elements combine to create compounds.

electron

A particle found in all atoms with a charge of negative electricity.

shielding

An effect where outer electrons are shielded by inner electrons from the attractive force caused by the protons within the nucleus.

nucleus

The central part of an atom.

sodium

A mineral that is frequently found in multiple food products.

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