Chemistry Exam Qs by Topic
GCSE Chemistry - OCR 21st Century Higher Triple
This page allows you to get ready for exams by practising real past exams papers.
Contents
Topic 1 - Air and Water
Topic 2 - Chemical Patterns
Topic 3 - Chemicals of the Natural Environment
Topic 4 - Material Choices
Topic 5 - Chemical Analysis
Topic 6 - Making Useful Chemicals
Topic 1 - Air and Water
How has the Earth’s atmosphere changed over time, and why? (Easier)
How has the Earth’s atmosphere changed over time, and why? (Harder)
Why are there temperature changes in chemical reactions? (Easier)
Why are there temperature changes in chemical reactions? (Harder)
What is the evidence for climate change, why is it occurring? (Easier)
What is the evidence for climate change, why is it occurring? (Harder)
How can scientists help improve the supply of potable water? (Easier)
How can scientists help improve the supply of potable water? (Harder)
Topic 2 - Chemical Patterns
How have our ideas about atoms developed over time? (Easier)
How have our ideas about atoms developed over time? (Harder)
What does the Periodic Table tell us about the elements? (Easier)
What does the Periodic Table tell us about the elements? (Harder)
How do metals and non-metals combine to form compounds? (Easier)
How do metals and non-metals combine to form compounds? (Harder)
How are equations used to represent chemical reactions? (Easier)
How are equations used to represent chemical reactions? (Harder)
What are the properties of the transition metals? (Easier)
What are the properties of the transition metals? (Harder)
Topic 3 - Chemicals of the Natural Environment
How are the atoms held together in a metal? (Easier)
How are the atoms held together in a metal? (Harder)
How are metals with different reactivities extracted? (Easier)
How are metals with different reactivities extracted? (Harder)
What are electrolytes and what happens during electrolysis? (Easier)
What are electrolytes and what happens during electrolysis? (Harder)
Topic 4 - Material Choices
How is data used to choose a material for a particular use? (Easier)
How is data used to choose a material for a particular use? (Harder)
What are the different types of polymers? (Easier)
What are the different types of polymers? (Harder)
How do bonding and structure affect properties of materials? (Easier)
How do bonding and structure affect properties of materials? (Harder)
Why are nanoparticles so useful? (Easier)
Why are nanoparticles so useful?(Harder)
What happens to products at the end of their useful life? (Easier)
What happens to products at the end of their useful life? (Harder)
Topic 5 - Chemical Analysis
How are chemicals separated and tested for purity? (Easier)
How are chemicals separated and tested for purity? (Harder)
How do chemists find the composition of unknown samples? (Easier)
How do chemists find the composition of unknown samples? (Harder)
How are the amounts of substances in reactions calculated? (Easier)
How are the amounts of substances in reactions calculated? (Harder)
How are the amounts of chemicals in solution measured? (Easier)
How are the amounts of chemicals in solution measured? (Harder)
Topic 6 - Making Useful Chemicals
What useful products can be made from acids? (Easier)
What useful products can be made from acids? (Harder)
How do chemists control the rate of reactions? (Easier)
How do chemists control the rate of reactions? (Harder)
What factors affect the yield of chemical reactions? (Easier)
What factors affect the yield of chemical reactions? (Harder)
How are chemicals made on an industrial scale? (Easier)
How are chemicals made on an industrial scale? (Harder)