Metals & Water

Alkali metals: Demonstration:

1) What is unusual about alkali metals? (storage)

2) Why are they stored under oil?

3) Alkali metals must be very _____________.

(reactive/unreactive/ flammable)

Reactions with water- Lithium example

Name of alkali metal

How does it react with water?

What are the products?

Lithium

fizzes, metal moves around, universal indicator turns blue

lithium hydroxide and hydrogen gas

Name of alkali metal

How does it react with water?

What are the products?

Name of alkali metal

How does it react with water?

What are the products?

Complete word equations for the reactions of

§ sodium with water

§ lithium with water

§ potassium with water.

Lithium + water → ……………………..hydroxide + hydrogen gas

Sodium + water → ………………………hydroxide + hydrogen gas

Potassium + water → ………………………..hydroxide + hydrogen gas

What is the order of reactivty most reactive first / least reactive bottom.

Name of metal- Copper

How does it react with water?

What are the products?

Name of metal- Aluminium

How does it react with water?

What are the products?

Name of metal- Iron

How does it react with water?

What are the products?

What is the order of reactivity? Most reactive at the top- least at the bottom.