MEDIUM
9th CBSE
IMPORTANT
Earn 100

Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.

Important Questions on Is Matter Around Us Pure

HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Short Answer Type Questions>Q 44
The ‘seawater’ can be classified as a homogeneous mixture as well as a heterogeneous mixture? Comment.
HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Short Answer Type Questions>Q 45
Which of the following do not exhibit the Tyndall effect?
 Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Long Answer Type Questions>Q 46
What is a physical change? Give two examples of physical changes.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Long Answer Type Questions>Q 46
What is a chemical change? Give two examples of chemical changes.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Long Answer Type Questions>Q 47
Give the main differences between physical changes and chemical changes.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Long Answer Type Questions>Q 47
Identify whether the following is a chemical change or a physical change?
A glass bottle breaking is _____ change. (Chemical/Physical)
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Long Answer Type Questions>Q 47

Identify whether the following are chemical change or physical change? Give reason.

Coal burning in air.

EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 2 - Is Matter Around Us Pure>Long Answer Type Questions>Q 47

Identify whether the following is a chemical change or physical change?

Making a cake.