Physical and Chemical Changes Class 7
Assessment
•
richa satyabrat
•
Science
•
7th Grade
•
3K plays
•
Hard
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6 questions
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1.
Fill in the Blank
Physical changes can be _______ or _______
2.
Multiple Select
Choose the chemical change among the following
3.
Multiple Choice
A change is a chemical change when it is accompanied by:
energy change
formation of new substances
change in chemical properties
all of the above
4.
Multiple Choice
The shipping industry has to bear huge financial losses because of rusting of ships.The rusting of ships occurs because:
the body of ship is always in contact with water
the air around the ship is humid
presence of salts in sea water speed the process of rusting
all of the above
5.
Multiple Choice
Expansion and contraction of metals is a:
physical change
chemical change
irreversible change
none of these
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