ICSE ICSE Class 8 - CISCE Question Bank Solutions

State in which of the following examples ie. a piece of wood, water, light gas is the Inter-particle space maximum.

State in which of the following examples ie. a piece of wood, water, light gas is the Inter-particle attraction maximum.

State in which of the following examples ie. a piece of wood, water, light gas is the Energy possessed by particles of matter, very large.

‘Inter-particle attraction between atoms of gases is very weak’. State five properties of gases which correlate as a consequence of the weak inter-particle attraction between particles of gases.

In which of the three states of matter – solids, liquids, or gases is the movement of atoms about their own position. Give a reason for the same.

State the ‘law of conservation of mass’.

Complete the statement given below by filling in the blanks with the correct words.

Atoms contain ________ with positively charged ________.

State the main points of Landolt’s experiment for experimental evidence of the law. 

Select the correct answer from A, B, C, D & E for the statement given below:

In Landolt’s experiment – the form in which the chemical energy stored up in the reactants __________ is released.

Select the correct answer from A, B, C, D & E for the statement given below:

The process of change of a liquid into vapour, [gas] on heating.

Select the correct answer from A, B, C, D & E for the statement given below:

The state of matter, where the inter-particle attraction between particles is maximum.

With reference to the liquid state of matter – answer the following

How does the stored energy, have an effect on inter-particles space.

With reference to the liquid state of matter – answer the following

State why the inter-particles attraction decreases to negligible.

Complete the statement by filling the blank with the correct word given below.

In naphthalene, the inter-particle attraction is _______.

Complete the statement by filling the blank with the correct word given below.

The law of conservation of mass is strictly valid if mass and _________ are considered together.

Complete the statement by filling the blank with the correct word given below.

When inter-particle space increases, the inter-particle attractive force _______________.

Give the reason for the following 

Particles of matter move more rapidly on the application of heat.

Complete the blank with reference to interconversion of matter on the basis of kinetic theory-with the word ‘increase’, ‘decreases’, ‘gain’, ‘lose’, or ‘overcome’ in the following case.

During soldification, the inter-particle space __________ gently.

Complete the blank with reference to interconversion of matter on the basis of kinetic theory-with the word ‘increase’, ‘decreases’, ‘gain’, ‘lose’, or ‘overcome’ in the following case.

During sublimation, the inter-particle attraction is _______________.

Write the names and symbols of the first twenty elements that you have studied in class VI & VII.