Additional Chemistry

katiehumphrey
Mind Map by , created over 5 years ago

GCSE Chemistry Mind Map on Additional Chemistry, created by katiehumphrey on 02/05/2014.

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katiehumphrey
Created by katiehumphrey over 5 years ago
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Additional Chemistry
1 atoms
1.1 mass number
1.1.1 protons + neutrons
1.2 atomic number
1.2.1 number of protons
2 isotopes
2.1 different atomic forms of the same element with same number of protons but different number of neutrons
3 ionic bonding
3.1 give away electrons
3.1.1 positive ion
3.1.1.1 groups 1 and 2
3.2 gain electrons
3.2.1 negative ion
3.2.1.1 groups 6 and 7
3.3 high melting/boiling points
3.3.1 strong attraction between ions
3.4 dissolve easily in water
3.4.1 ions separate
3.4.1.1 conduct electricity
4 covalent bonding
4.1 share electrons to form full outer shell
4.1.1 dot and cross diagrams
4.2 simple molecular substances
4.2.1 atoms have very strong covalent bonds
4.2.2 weak intermolecular forces
4.2.2.1 low melting/boiling points
4.3 giant covalent structures
4.3.1 strong covalent bonds
4.3.1.1 high melting/boiling points
4.3.2 diamond
4.3.3 graphite
5 metallic bonding
5.1 sea of free electrons among metal atoms
5.1.1 good conducters of heat/electricity
6 alloys
6.1 mixture of two or more metals
6.2 harder
7 nanoparticles
7.1 really tiny
7.2 fullerenes
7.2.1 molecules of carbon
8 polymers
8.1 thermosoftening
8.1.1 weak intermolecular forces
8.1.1.1 no cross linking chains
8.1.1.1.1 easy to melt
8.2 thermosetting
8.2.1 strong intermolecular forces
8.2.1.1 crosslinks
8.2.1.1.1 strong/hard/rigid
8.3 low density
8.3.1 high pressure
8.3.1.1 flexible
8.3.1.1.1 plastic bags
8.4 high density
8.4.1 low pressure with catalyst
8.4.1.1 rigid
8.4.1.1.1 water tanks
9 relative formula mass
10 moles
10.1 mass of element g / relative formula mass
10.1.1 42 g of carbon / 12 (RFM) = 3.5 moles
11 percentage yield
11.1 (actual yield / predicted yield) X 100
12 chromotography
12.1 separates artificial colours
12.1.1 filter paper
12.1.2 gas
13 rates of reaction
13.1 temperature
13.2 concentration
13.3 ctalayst
13.4 surface area
13.5 collision theory
13.5.1 more collisions increase rate of reaction
13.5.1.1 higher temperature
13.5.1.2 higher concnetration
13.5.1.3 larger surface area
14 endothermic
14.1 transfers energy to surroundings
15 exothermic
15.1 takes energy in from surroundings
16 salts
16.1 acid + base <> salt + water
16.2 acid + metal <> salt + hydrogen
16.3 acid + metal oxide <> salt + water
16.4 acid + metal hydroxide <> salt + water
17 electrolysis
17.1 splitting up with electricity
17.1.1 OILRIG
17.1.2 + ions lose electrons and go to - electrode (cathode)
17.1.3 - ions gain electrons go to + electrode (anode)