Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>Exercise 7>Q 3

MEDIUM

Lower Secondary Stage 9

IMPORTANT

Earn 100

When reacting a solid with an acid to make salt, stirring the mixture helps the reaction to happen more quickly. Explain why.

Important Questions on Preparing Salts

HARD

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>Exercise 7>Q 3

When reacting a solid with an acid to make salt, adding the metal in excess results in just solid left over with no acid. Explain why.

HARD

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>Exercise 7>Q 4

Suggest why a powder or granules are used instead of a large piece of metal while preparing a salt?

MEDIUM

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>Exercise 10>Q 5

Rajesh plans to make pure crystals of potassium sulphate using a metal carbonate solution. Write a word equation of the reaction should use.

HARD

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>Exercise 10>Q 5

Rajesh plans to make pure crystals of potassium sulphate using a metal carbonate solution. Describe how we will know the exact amount of acid to just neutralise the solution.

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>End of Chapter Review>Q 1

Which of these equations are balanced?

a. $Mg + H_{2} {SO}_{4} \to {MgSO}_{4} + H_{2}$

b. $Na + HCl \to NaCl + H_{2}$

c. $Ca + HCl \to {CaCl}_{2} + H_{2}$

d. $2 Li + H_{2} {SO}_{4} \to {Li}_{2} {SO}_{4} + H_{2}$

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>End of Chapter Review>Q 2

Complete this word equation:

Calcium carbonate $+$ Hydrochloric acid $\to$ Calcium _____ $+$ Water $+$ _____.

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>End of Chapter Review>Q 3

Write the word equation for the reaction of iron with dilute sulphuric acid.

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>End of Chapter Review>Q 4

What two products are formed when zinc reacts with nitric acid?

a. zinc nitric

b. zinc nitrate

c. hydrogen

d. water

e. carbon dioxide