Q15 of 102 Page 76

Name the gas evolved when a metal reacts with water.

Metals react with water to produce hydrogen gas. For example, sodium reacts with water to form sodium hydroxide and hydrogen gas.


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13

Write a word equation for the reaction of magnesium with oxygen.

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Iron metal reacts slowly with the oxygen and moisture of damp air to form rust. State whether the rust formed is acidic, basic or neutral.

 16

Name the gas evolved when a metal reacts with a dilute acid.

 17

Name one metal which reacts with dilute hydrochloric acid to produce hydrogen gas.