Metals and Water

• Science
• Lower Secondary (Key Stage 3)

Metals and Water

Watch the demonstration and add you observations to the results table.

How would we write a word equation for these reactions?

Name the alkali formed.

Lithium + Water ................. .................... + Hydrogen

1. Lithium Oxide
2. Lithium Hydroxide
3. Lithium Chloride
4. Lithium Nitrate

Name the alkali formed.

Sodium + Water ................. .................... + Hydrogen

1. Sodium Hydroxide
2. Sodium Nitrate
3. Sodium Sulfate
4. Sodium Oxide

Name the alkali formed.

Calcium + Water ................. .................... + Hydrogen

1. Calcium Carbonate
2. Calcium Oxide
3. Calcium Sulfate
4. Calcium Hydroxide

Hydroxides are always...

1. Acids
2. Alkalis
3. Neutral

Why do we make water pipes out of copper instead of potassium?

Why do we store alkali metals in oil?

Why did we add universal indicator to the water?

Pick 1 word for each box.

Acid

Alkali

Neutral

Evaporation

Filtration

Universal indicator

Litmus paper

Measuring cylinder

Solution

Solvent

Solute

Oxidation

Neutralisation

Hydrogen

Chloride

Nitrate

Sulfate

Chemical reaction

Physical change

Observation

Fizzing

Red

Yellow

Green

Blue