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

HARD

Lower Secondary Stage 9

IMPORTANT

Earn 100

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.

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 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

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>End of Chapter Review>Q 5

The salt ammonium nitrate has the formula

{NH}_{4} {NO}_{3}

. How many nitrogen atoms are present in it?