MEDIUM
Upper Secondary: IGCSE
IMPORTANT
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Write the formulae of the compound Sulphur dioxide.

Important Questions on Reacting Masses, and Chemical Equations

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 5 - Reacting Masses, and Chemical Equations>Checkup on Chapter 5>Q 1
Write the formulae of the Sulphur trioxide.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 5 - Reacting Masses, and Chemical Equations>Checkup on Chapter 5>Q 1
Write the formulae of the compound Sodium chloride.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 5 - Reacting Masses, and Chemical Equations>Checkup on Chapter 5>Q 1
Write the formulae of the compound Magnesium chloride.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 5 - Reacting Masses, and Chemical Equations>Checkup on Chapter 5>Q 1
Write the formulae of the compound Hydrogen chloride.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 5 - Reacting Masses, and Chemical Equations>Checkup on Chapter 5>Q 1
Write the formulae of the compound Methane.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 5 - Reacting Masses, and Chemical Equations>Checkup on Chapter 5>Q 1
Write the formulae of the compound Ammonia.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 5 - Reacting Masses, and Chemical Equations>Checkup on Chapter 5>Q 2

You can work out the formula of a compound from the ratio of different atoms in it. Sodium carbonate has the formula Na2CO3 because it contains two atoms of Sodium for every one atom of Carbon and three atoms of Oxygen. Deduce the formula for the compound:

Compound Ratio in which the atoms are combined in it
Lead oxide 1 of lead, 2 of oxygen

 

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 5 - Reacting Masses, and Chemical Equations>Checkup on Chapter 5>Q 2

You can work out the formula of a compound from the ratio of different atoms in it. Sodium carbonate has the formula Na2CO3 because it contains two atoms of Sodium for every one atom of Carbon and three atoms of Oxygen. Deduce the formula for the compound:

Compound Ratio in which the atoms are combined in it
Lead oxide 3 of lead, 4 of oxygen