Catalysts

Question 1

What are catalysts

Answer 1

These are substances that speed up a reaction without being used up in the reaction themselves. They provide an alternative pathway for the reaction with a lower activation energy. Catalysts never produce more product, they just produce the same amount more quickly.

Question 2

Industrial catalysts

Answer 2

Many catalysts are transition metals, for example, nickel, iron and platinum

Question 3

Biological catalysts

Answer 3

An enzyme is a biological catalyst. They work within a narrow range of pH and temperature. They are used in everyday products such as yeast and washing up liquid

Question 4

Strengths

Answer 4

Products can be made more quickly saving energy, time and money
They are reusable
They reduce the need for high temperatures, saving fuel and pollution

Question 5

Weakness

Answer 5

Catalysts are expensive