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Zinc + Copper Sulphate has NO REACTION
Empirical formular
Ions
Simplest whole number ratio. 10g H 80g O Amount of H atoms = mass/ Ar 10/1 = 10 mol Amount of O atoms = 80/16 = 5 mol so ratio 10: 5 2:1 H2O
They give each other the electron When ionic compounds form + ions attract - ions and arrange into ionic lattice The electrostatic force of attraction between oppositely charged ions called ionic bond Very strong and need a lot of energy to break and overcome forces. Very high boiling point. 2+ ions have a higher melting point than + as they attract more strongly.
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Chapter 5: Chemical formulae and equations
Annotations
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