Question

A scientist was studying the metals a b and c he found that a react with cold water hot water and steam b with hot water and steam he found that c reacts with steam only identify a b and c and write the chemical equations involved

Answer 1

Sodium reacts violently with cold water to form sodium hydroxide and hydrogen. So A can be Sodium (Na)

Equation: 2Na+2H2O----- 2NaOH+H2

Calcium reacts with hot water and steam but slower than Sodium. The products are Calcium Hydroxide and hydrogen. So, B is Calcium (Ca).

Equation: Ca+2H2O------ Ca(OH)2+H2

Magnesium reacts only with steam. The products are Magnesium Hydroxide and Hydrogen. So, C is Magnesium (Mg).

Equation: Mg+2H2O----- Mg(OH)2+H2

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