EASY
9th ICSE
IMPORTANT
Earn 100

Name a nitrate compound that produces brown gas on heating.

Important Questions on Chemical Changes and Reactions

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 2 - Chemical Changes and Reactions>EXERCISE 2(A)>Q 1
What is a chemical reaction?
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 2 - Chemical Changes and Reactions>EXERCISE 2(A)>Q 1
State the condition necessary for a chemical change or reaction to take place.
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 2 - Chemical Changes and Reactions>EXERCISE 2(A)>Q 2
Define chemical change.
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 2 - Chemical Changes and Reactions>EXERCISE 2(A)>Q 2

Define a chemical bond.

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 2 - Chemical Changes and Reactions>EXERCISE 2(A)>Q 2

Define the term effervescence.

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 2 - Chemical Changes and Reactions>EXERCISE 2(A)>Q 2

Define the term precipitate.

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 2 - Chemical Changes and Reactions>EXERCISE 2(A)>Q 3

Give an example of a reaction where heat is involved.

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 2 - Chemical Changes and Reactions>EXERCISE 2(A)>Q 3

Give an example of a reaction where light is involved.