Elements, mixtures ‘n’ compounds

Emma Boxley
Mind Map by , created over 6 years ago

AQA IGCSE Chemistry (yr 8) Mind Map on Elements, mixtures ‘n’ compounds, created by Emma Boxley on 05/02/2013.

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Emma Boxley
Created by Emma Boxley over 6 years ago
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Elements, mixtures ‘n’ compounds
1 Testing for Gases
1.1 Carbon Dioxide
1.1.1 Will make limewater go milky
1.2 Hydrogen
1.2.1 Will make a burning splint go out with a squeaky pop
1.3 Oxygen
1.3.1 Will relight a just burning splint
1.3.2 Will make a burning splint shine brighter
2 The Periodic Table
2.1 The metals are on the left
2.2 Group 1 metals are the most reactive
2.2.1 They react with water and air
2.3 The transition metals are in the middle
2.4 The non-metals are on the right
2.5 The only two elements that can be liquid at room temp. are mercury and bromine
3 Definitions
3.1 Condensation
3.1.1 When a gas turns into a liquid
3.2 Solidyfying
3.2.1 When a liquid turns into a solid
3.2.2 Normally by freezing
3.3 Sublimination
3.3.1 The change of a state straight from a solid to a gas
3.3.2 Dry ice
3.4 Evaporation
3.4.1 Liquid to a gas
3.5 Melting
3.5.1 Solid to a liquid
4 Melting and boiling points definitions
4.1 Melting points
4.1.1 Between its melting point and boiling point a substance is a liquid
4.1.2 Below its melting point it is a solid
4.2 Boiling points
4.2.1 Above its boiling point a substance is a gas
5 Melting and boiling points of some substances
5.1 Oxygen
5.1.1 Melting point= -218C
5.1.2 Boiling point -183C
5.1.3 25C is above its boiling point so then the oxygen is a gas
6 Mixtures and Compunds
6.1 Mixtures
6.1.1 Are easy to separate
6.1.2 2 or more different atoms
6.1.3 Are not combined
6.2 Compounds
6.2.1 Atoms may form molecules
6.2.1.1 Molecules are two or more atoms joined together
6.2.2 Atoms of two or more elements are held together by a chemical bond

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