Materials: Metals and Non-Metals Notes

• Metals react with acids producing hydrogen gas. With some metals the reaction is very fast and vigorous, while with others it is slow. Hydrogen gas produced burns with a pop sound when a burning match stick is brought near to the test tube.

Example:

• Sodium reacts with HCl to form Sodium chloride and Hydrogen.

• Zinc reacts with sulphuric acid to form Zinc sulphate and Hydrogen

1. Metals react with NaOH producing hydrogen gas.
2. Nonmetals undergo complex reactions with NaOH.

Displacement Reaction:

Uses of Metals