HARD
7th CBSE
IMPORTANT
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An element is a group of  atoms. (similar/ dissimilar)

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Important Questions on Physical and Chemical Changes

HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 5
A compound is a group of _____ atoms. (same / different)
HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 6
Is this true that when two elements react chemically to form a new compound, they lose their elemental properties and acquire new properties? Explain with example?
HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 7
What is the difference between a compound and mixture?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 1
Change of state is a physical change. Explain it giving example?
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 2
Syrup made from sugar is a mixture. Suggest a method for obtaining sugar back from syrup?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 3
What are important features of mixture?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 4
Give some common examples of mixtures found in nature?
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 5
How to obtain iron filings back from a mixture of iron filings and powdered sulphur?