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2015-09-18T09:05:46+08:00

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Sodium chloride (NaCl) - crystalline solid and salty. use to give flavor to our food

Hydrogen peroxide (H2O2) - colorless liquid - releases gas in form of bubble during chemical reaction used as disinfectant

Ferrous sulfate (FeSO4) -  grey - black solid as food supplement

Ethanol (CH3CH2OH) - colorless liquid with characteristic odor, volatile. used as antiseptic and disinfectant

Methane (CH3) - gaseous and produces blue colored flame. used as fuel for cooking

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