Chemistry Chapter 2
- Created by: elliebaxter
- Created on: 12-01-17 13:03
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- Chemistry Chapter 2
- Forming ions
- Metal atoms loose atoms
- Non metal atoms gain atom
- Ions are a charges particle produced by the loss or gain of an electron
- Strong electrostatic attractions between positive and negative ions forming ionic bods
- Forming molecules
- 2 non-metals share electrons
- Moles
- no. of moles = mass (g) / Ar or Mr
- Percentages and forulae
- percentage mass = mass / total mass X 100
- Reversible reactions
- Litmus paper - acid = red alkali = blue
- Can also use indicator
- Example: ammonia + hydrogen chloride = ammonium chloride
- The 2 hot gases rise but cool near the mouth of the tube and react with each other to make a white sold (
- Litmus paper - acid = red alkali = blue
- Percentage yield
- 1) Work out Mr 2) X until right number 3) Amount made / possible amount made X 100
- Forming ions
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