MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Earn 100

Explain what an enzyme is, and give an example.

Important Questions on The Speed of a Reaction

HARD
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Q>Q 4
Why do our bodies need enzymes?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Q>Q 5
Catalysts are very important in the industry. Explain why.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Q>Q 6
Give two examples of catalysts used in the chemical industry.
HARD
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Q>Q 7
A box of biological detergent had this instruction on the back: Do not use in a wash above 60°C. Suggest a reason.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Q>Q 1
What is a photochemical reaction? Give two examples.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Q>Q 2
Write down the equation for photosynthesis.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Q>Q 2
What is the purpose of the chlorophyll in photosynthesis?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 10 - The Speed of a Reaction>Q>Q 2
Stronger light speeds up photosynthesis. Why?