分类： IGCSE
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11.5 Alkenes
1. General information of alkenes General formula: CnH2…
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11.4 Alkanes
1. General information of alkanes General formula: CnH2…
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Flame test
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Tests for aqueous cations
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Preparation of salts
1. Methods to prepare salts The salt in chemistry alway…
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General solubility rules for salts
(a) All sodium, potassium and ammonium salts are solubl…
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7.2 Oxides
Most nonmetallic oxides are acidic oxides, such as SO2&…
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How to write ionic equation?
All ionic compounds and acids can be dissociated into i…
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How to write an ionic equation?
How to write the ionic equation All ionic compounds and…
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Tests for anions
anion test test result carbonate, CO32- add dilute acid…