ICSE ICSE Class 6 - CISCE Question Bank Solutions for Chemistry

Give reasons for the following:

Solids have a definite shape and are highly rigid while gases have to definite shape and are least rigid.

Give reasons for the following:

Sugar can be distinguished from talcum powder using water.

Give reasons for the following:

Water on freezing turns into ice.

Give reasons for the following:

A bottle of perfume on opening evolves an odour which can be sensed over a long distance.

Differentiate between the terms –
elements, compounds & mixtures.

Complete the statement given below by selecting the correct word.

The space between atoms in gases is maximum while in ____ is minimum,

The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – two coloured gases (with their colours)

The important physical properties of substances are colour, odour, nature, density & solubility in water.

Name – a gas with a pungent, choking odour which is lighter than air

The important physical properties of substances are colour, odour, nature, density & solubility in water.

Name - a poisonous gas almost as heavy as air.

Complete the statement – an element is a pure substance made up of ____________ atoms.

Draw a labelled diagram of an atom including its nucleus, orbits & their contents.

Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –

1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.

A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________

Fill in the blank with the correct word Given below.

The space between atoms’ [molecules] of solids is ____

State what are radicals. Give the names of the radicals –

(a) NO₃
(b) OH
(c) SO₄
(d) CO₃

Give the name of the radical - NO₃

Give the name of the radical - OH

Give the name of the radical - SO₄

Give the name of the radical - CO₃

Complete the statement with the correct words.
Acid’s are chemicals which are _____ in taste and derived from plants and ________.

Complete the statement with the correct words.
_______  are chemicals which are hydroxide (or oxides) of  ______  eg. sodium hydroxide.