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- 1. Multiple Choice
A physical change...
changes the physical properties of an object, but does not create a new substance.
creates a new substance and cannot be undone.
- 2. Multiple Choice
A chemical change
changes the physical properties of an object, but does not create a new substance.
creates a new substance and cannot be undone.
- 3. Multiple Choice
Is this an example of a physical or chemical change?
physical
chemical
- 4. Multiple Choice
BURNING OF WOOD IS WHAT CHANGE
PHYSICAL CHANGE
CHEMICAL CHANGE
- 5. Multiple Choice
CHEMICAL CHANGE IS REVERSIBLE
TRUE
FALSE
- 6. Fill in the Blank
RUSTING OF IRON IS WHAT REACTION
- 7. Multiple ChoiceWhich of these is NOT a reversible change?Water to IceJuice to PopsicleCookie Dough to CookieMelting Chocolate
- 8. Multiple ChoiceIs heating sugar to make caramel a physical or chemical change?ChemicalPhysical
- 9. Multiple ChoicePhotosynthesis is an example of aphysical changechemical change
- 10. Multiple Choice
In a physical change:
The molecules of the substance do not change
The molecules of the substance do not change
The molecules of a substance undergo change
New substance are formed
- 11. Multiple Choice
Which of the following changes cannot be reversed?
Milk to paneer
Cold milk to hot milk
Yarn to knitted sweater
Wet clothes to dry clothes
- 12. Multiple Choice
The process where the liquid changing into solid is called
Evaporation
Condensation
Heating
Boiling
- 13. Multiple Choice
A change which is permanent in nature....
Irreversible
Reversible
- 14. Multiple Choice
A bag of cement lying in the open gets wet due to rain during night time. The next day sun shines brightly. Do you think the changes that have occured in the cement can be reversed?
Yes
No
- 15. Multiple Choice
Give a example of physical change
kicking a football
burning a paper
growth of animals and plants
cooking
- 16. Multiple Choice
Growth of animals and plants
chemcial change
physical change
I don't know
Reversible change
- 17. Multiple Choice
Salt can be separated from its solution (salt dissolved in water), because
mixing of salt in water is a change that can be reversed by evaporation
mixing of salt in water is a change that can be reversed by heating and melting salt
mixing of salt in water is a change that cannot be reversed
mixing of salt in water is a permanent change
- 18. Multiple Choice
When iron is heated it
contracts
expands
dissolves
evaporates
- 19. Multiple Choice
The process where water changes into a vapour after heating is called
decantation
filtration
condensation
evaporation
- 20. Multiple Choice
Boiling an egg is a
chemical change
physical change
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