Products

Corrosive

Reactants

pH

Neutralisation

Kneading bread dough

A clock wound up

Trying to squeeze into your jeans after lockdown

Rubbing both hands together to create heat.

Squeezing a lemon

A washing machine pushed along a floor.

Striking a match stick on a matchbox.

A mouse trap waiting to snap closed

Squashing marshmallows into a jar

A car towing another car with the help of a chain.

Crushing a coke can

An iron being pushed across material.

Skis sliding against snow.

A chord hanging from the ceiling with a light fitting on the end of it.

A stretched elastic band

Is gastric acid a strong or a weak acid?

If you are suffering from heartburn, what could you take to alleviate the symptoms?

Does a pH of 1,5 indicate that the acid is strong or weak?

What is the word for what is done to a base when an acid is added to it?

The reaction between an acid and a metal hydroxide is

The reaction between an acid and a metal carbonate is

The reaction between an acid and a metal oxide is

Why can hydrogen be collected in this way? 

How do we test for hydrogen?

How do we know whether the gas is hydrogen when we test it?

Acid + metal salt + hydrogen gas

Ca + 2HCℓ   CaCℓ₂ + H₂

Mg + 2HNO₃   Mg(NO₃)₂ + H₂

2K + H₂SO₄   K₂SO₄ + H₂

Zn + H₂SO₄   ZnSO₄ + H₂

2Na + 2HCℓ 2NaCℓ + H₂