EASY
7th ICSE
IMPORTANT
Earn 100

What do you mean by the term effervescence?

Important Questions on Language of Chemistry

EASY
7th ICSE
IMPORTANT
Define a chemical equation.
MEDIUM
7th ICSE
IMPORTANT
What is a precipitate? Write a chemical reaction in which a white-coloured precipitate is formed.
EASY
7th ICSE
IMPORTANT
What information does a chemical equation provide?
EASY
7th ICSE
IMPORTANT

Differentiate between :

Reactants and products.

HARD
7th ICSE
IMPORTANT

Differentiate between exothermic and endothermic reactions.

EASY
7th ICSE
IMPORTANT

Give one example to illustrate the following characteristic of a chemical reaction.

Change of state

EASY
7th ICSE
IMPORTANT

Give one example to illustrate the following characteristic of a chemical reaction.

Change of colour

EASY
7th ICSE
IMPORTANT

Give one example to illustrates the following characteristic of a chemical reaction.

Evolution of heat