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Flashcards in General reactions Deck (10)
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1

Direct combination

Metal combining with non-metal, or 2 non-metals combining. May require heat

2

Displacement / competition / redox

2 metals competing for a non-metal or non-metal group or 2 non-metals competing for a metal group

3

Thermal decomposition of metal carbonates

Metal carbonate -> metal oxide + carbon dioxide
(providing metal is below sodium in the activity series - if not then there is no reaction)

4

Thermal decomposition of metal hydroxides

Metal hydroxide -> metal oxide + water
(providing metal is below sodium in the activity series - if not then there is no reaction)

5

Thermal decomposition of metal nitrates

Metal nitrate -> metal oxide + nitrogen dioxide + oxygen
providing the metal is lower than sodium in reactivity, if not:

Metal nitrate (V) -> metal nitrate (III) + oxygen

6

Precipitation reactions

2 soluble compounds separately dissolved in water then the 2 solutions are mixed. If the cations swap anions to form an insoluble compound then a precipitate will be formed

7

Acid and metal

Metal + acid -> salt + hydrogen
Only if metal is more reactive than hydrogen

8

Acid and carbonate

Metal carbonate + acid -> salt + water + carbon dioxide
If the salt produced is insoluble the reaction may be slower

9

Acid and base

Acid + base -> salt + water

10

Alkalis and ammonium salts

Alkali + ammonium salt -> salt + water + ammonia gas