MEDIUM
Lower Secondary Stage 8
IMPORTANT
Earn 100

Write a word equation for: What happens when carbon dioxide is bubbled through lime water.

Important Questions on Chemical Reactions

HARD
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 11>Q 1
Explain, how a new theory (particle theory) helped change ideas about what happens when substances burn.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 11>Q 2
Plan a way of collecting evidence to prove that carbon dioxide is made when carbon burns.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 11>Q 3
When you burn a candle, substances in the wax react with oxygen in the air to produce the products carbon dioxide and water vapour. Explain why a candle gets smaller as it burns.
EASY
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>End of chapter review>Q 1
What salt is formed when calcium reacts with sulphuric acid.
EASY
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>End of chapter review>Q 2
Iron is added to a solution of copper chloride. Copper and iron chloride are formed. Write the word equation for this reaction.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>End of chapter review>Q 3
What two reactants can be used to make the salt magnesium chloride?
EASY
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>End of chapter review>Q 4
Write the word equation for the reaction when zinc is heated in oxygen.
EASY
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>End of chapter review>Q 5
What gas is formed when acid reacts with metals?