Chemistry
- Created by: BobBBBB123
- Created on: 21-02-20 18:49
View mindmap
- Chemistry
- Metals and Acids
- MASH- Metal + Acid = Salt + Hydrogen
- Mg, Al, Zn, Fe, Sn, Pb and Cu
- Most reactive fizz with bubbles and pops
- Sulphuric- Sulphates, Hydrochloric-Chlorides, Nitric- Nitrates
- Tests for Substances
- The lit splint will make a squeaky pop in the presence of hydrogen
- Carbon dioxide turns limewater cloudy.
- Oxygen relights a glowing splint
- Metals and Oxygen
- Metal + Oxygen = Metal Oxide
- Surface area and Volume refer to State of Division
- Low state of division is high reaction
- Metals and Water
- Reactions
- Sulphur: Bright blue flame/Forms strong acid
- Carbon: Glows red and sparks/Formsweak acid
- Magnesium: Bright white flame/Forms strong alkali
- Iron: Yellow spark/Forms neutral solution
- Metal + water = Metal Hydroxide + Hydrogen
- Alkali metals are group one of the Periodic Table and are v reactive
- Most reactive is K and floats on surface, before catching lilac flame
- PSCMACZITLHCSGP- Please save Charlie's monkeys and Charlie's zebras in the lead high cage surrounding Gareths pelicans
- Reactions
- Rusting
- Air/Water/Oxygen/Salt against Oil/Boiled Water
- Metals corrode when in contact with air or water. Iron rusts. Metals corrode.
- Rust is hydrated iron oxide: Fe2O3.nh2O,and we need oxygen, water and iron
- Physical/ Sacrificial/ Galvanising
- Reactivity Series
- Lists Metals from least to most reactive
- Oxidation and Reduction: Adding or removing oxygen from a compound
- Displacement Reactions
- The more reactive a metal, the greater its affinity for oxygen
- A more reactive metal will displace a less reactive metal from its compound
- Mg is reactive and MgSO4 is not
- Metals and Acids
Comments
No comments have yet been made