Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>Exercise 2>Q 4

MEDIUM

Lower Secondary Stage 9

IMPORTANT

Earn 100

Explain why the formula of potassium oxide is $K_{2} O$ .

Important Questions on Preparing Salts

MEDIUM

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>Exercise 2>Q 5

Write the formula for iron

(III)

hydroxide.

EASY

Lower Secondary Stage 9

IMPORTANT

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

Say whether the given equation is balanced or not.

${CaCO}_{3} \to CaO + {CO}_{2}$

MEDIUM

Lower Secondary Stage 9

IMPORTANT

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

Say whether the given equation is balanced or not.

$Na + H_{2} O \to NaOH + H_{2}$

MEDIUM

Lower Secondary Stage 9

IMPORTANT

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

Say whether the given equation is balanced or not.

${CH}_{4} + O_{2} \to {CO}_{2} + H_{2} O$

EASY

Lower Secondary Stage 9

IMPORTANT

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

Say whether the given equation is balanced or not.

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

MEDIUM

Lower Secondary Stage 9

IMPORTANT

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

${CaCO}_{3} \to CaO + {CO}_{2}$

$Na + H_{2} O \to NaOH + H_{2}$

${CH}_{4} + O_{2} \to {CO}_{2} + H_{2} O$

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

Some of the given equations are not balanced. Write the balanced symbol equations for them.

MEDIUM

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>Exercise 4>Q 8

Copy and complete the word equation for the following reaction.

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

EASY

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 6 - Preparing Salts>Exercise 4>Q 8

Copy and complete the word equation for the following reaction.

_____ $+$ Sulphuric acid $\to$ Magnesium _____ $+$ _____.