acid Bases and salts
activity 2.1 what happens when indicators are added into acids and bases
activity 2.2 what happens when acid or base added into olfactory indicators
activity 2.3 what happens when zinc metal is added into dilute sulphuric acid
activity 2.4what happens when zinc metal is added into sodium hydroxide
activity 2.5 what happens when sodium carbonate and sodium bicarbonate added into acid
activity 2.6 Neutralisation reaction
activity 2.7 what happens when metal oxide is added into acid
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