EASY
Lower Secondary Stage 8
IMPORTANT
Earn 100

Write the name of the compound. Use the Periodic Table to help you find the name of the element from its symbol.

NaNO3

 

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Important Questions on Chemical Reactions

EASY
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 2>Q 3

Write the name of the compound. Use the Periodic Table to help you find the name of the element from its symbol.

 

K2CO3
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 5>Q 1
 Describe the two signs that show magnesium is reacting with the hydrochloric acid.
EASY
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 5>Q 2

Question Image

The particle diagram shows how hydrogen gas is formed in the reaction between hydrochloric acid and magnesium metal.

Use the idea of particles to explain why the pieces of magnesium get becomes smaller.

MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 7>Q 3
Name the salt made when calcium reacts with hydrochloric acid.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 7>Q 4
Write the word equation for the reaction between tin and sulphuric acid.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 7>Q 4
Write the word equation for the reaction between aluminium and hydrochloric acid.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 8>Q 6
Marble statues can be damaged over time because of acid rain. Suggest why this happens.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 6 - Chemical Reactions>Exercise 9>Q 7
Write a word equation for the reaction between zinc carbonate and sulphuric acid.