What do plate movements cause?

What process is rock recycled by?

Why is the plate tectonic theory widely accepted now?

Why do scientist study volcanoes?

What are rods used for?

What makes an alloy?

How is copper extracted?

How is copper purified?

What can reinforce concrete?

What makes iron rust?

What can speed up the rusting of iron?

Where are metals extracted from?

Does aluminium have a high or low density?

Why doesn't aluminium corrode?

What is the equation for the haber process?

What is ammonia used for?

What can fertilisers cause?

What is the word equation for a neutralisation reaction?

What does acid react with to make salts?

What is electrolysis used to split sodium chloride into?

In electrolysis where do the positive ions move?

In electrolysis where do the negative ions move?

How is sodium chloride mined?