1941019
Description
GCSE AQA Chemistry C3 Revision
Mindmap
- The Alkali
Metals - Group 1
- Very Reactive
- Easy to cut/soft
- Low density (Lithium,
sodium and potassium float
on water)
- Low melting/boiling points
- Good conductors of heat/electricity
- Shiny when freshly cut
- Reactivity increases down the group
- Very Reactive
- Group 7 - the Halogens
- Reactivity decreases down the group
- Group 7 need 1 electron to be
stable. More shells --> attraction
decreases. Nucleus = positive
charge; electrons negative charge.
- Group 7 need 1 electron to be
stable. More shells --> attraction
decreases. Nucleus = positive
charge; electrons negative charge.
- poor conductors of energy + electricity
- Low melting + boiling points
- Can use a more reactive halogen to
displace a less reactive halogen
- Can take part in both covalent and ionic bonding
- Gold
- Very malleable
- Expensive
- Hard to find in pure form
- Uses: Jewellery + plating teeth
- Very malleable
- Nickel and Zinc
- High melting points
- Good conductors of heat
- Nickel uses: Coins, catalyst for margarine
- Zinc uses: Galvanising steel; stops it from rusting
- High melting points
- Iron
- Quite Brittle
- Reacts with oxygen --> rusts easily
- Uses: building materials, tools and structures
- Quite Brittle
- Copper
- good conductors of heat
- Doesn't react with water
- Uses: Water pipes, electric cables
- good conductors of heat
- Titanium
- Very light weight
- Has an oxide layer on its surface; stops water +
air getting to the metal --> resists corrosion
- Expensive; has to be extracted from its ore; large
amount of energy
- Withstands high temps.
- Uses: Artificial hip joint, pipes in nuclear
power stations, racing bikes
- Very light weight
- Reactivity decreases down the group
- The transition Metals
- Good conductors of electricity and energy
- Hard + Strong
- High densities
- High melting points
- Much less reactive than metals in group 1
- Do not react easily with oxygen or water as alkali metals do
- If they corrode, it is very slowly
- useful as building materials
- useful as building materials
- Do not react easily with oxygen or water as alkali metals do
- Many form coloured compounds (copper sulphate - blue)
- Can form more than 1 ion. Fe^2+ and Fe^3+
- compounds of these ions are different colours
- compounds of these ions are different colours
- Malleable (can be moulded into shapes)
- Good conductors of electricity and energy
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