ICSE ICSE Class 8 - CISCE Question Bank Solutions

Write the Chemical Name of the Following and Also Give Their Molecular Formulae:

Vinegar

State four differences between compounds and mixtures.

Write the Chemical Name of the Following and Also Give Their Molecular Formulae:

Marble

Write the Chemical Name of the Following and Also Give Their Molecular Formulae:

Sand

What are the advantages of chromatography?

Name: a Metal Which is brittle

Name: a non-metal which is lustrous

Name: a Liquid Metal

Give two applications of chromatography.

Name: a Metal Which is a Poor Conductor of Electricity.

Name: a Non-metal Which is a Good Conductor of Electricity.

Name: a Liquid Non-metal

Name: the Hardest Naturally Occurring Substance

Name: an Inert Gas

Differentiate between displacement reaction and a neutralization reaction.

Classify the following reaction into – 

1. Direct combination 
2. Decomposition
3. Displacement
4. Double decomposition

The reaction is – Zinc sulphate reacts with ammonium hydroxide to give ammonium sulphate and zinc hydroxide.

Represent with the help of a simple chart how matter is classified into pure or impure substances & further into elements, compounds & mixtures, with elements further segmented.

Define the terms elements, compounds & mixtures with a view to show their basic difference.

‘An atom is the basic unit of an element’. Draw a diagram of an atom – divisible as seen today.

‘The modern periodic table consists of elements arranged according to their increasing atomic numbers’. With reference to elements with atomic numbers 1 to 20 only in the periodic table – differentiate them into – metallic elements, metalloids, non-metals & noble gases.