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- 1. Multiple Choice
Which of the following are both physical and chemical change?
Cooking food
Passing of electric current
Boiling of water
All of above
- 2. Multiple Choice
What property stays the same during physical and chemical changes?
Density
Shape
Mass
Arrangement of particle
- 3. Multiple Choice
Which among the following is not a chemical change ?
Melting of ice
Carbon cycle
Dehydration of substances
Fermentation of substances
- 4. Multiple Choice
Which of the following is an example of chemical change?
Filling up a balloon with hot air.
Taking a glass of water and freezing it by placing it in the freezer
A plant collecting sunlight and turning it into food.
Your dog ripping up your homework.
- 5. Multiple Choice
Which of the following is the correct difference between physical and chemical change?
In physical change new substances are formed whereas in chemical change, no new substances are formed
In physical change, no energy is absorbed or evolved whereas chemical change is always accompanied by the absorption or evolution of energy
Physical change is permanent while chemical change is temporary
None of the above
- 6. Multiple Choice
Which of the following are chemical changes?(i) Decaying of wood(ii) Burning of wood(iii) Sawing of wood(iv) Hammering of a nail into a piece of wood
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i) and (iv)
- 7. Multiple Choice
Which is not a clue that could indicate a chemical change?
change in color
change in shape
change in energy
change in odor back
- 8. Multiple Choice
Choose the most appropriate answer: Physical changes are
permanent
periodic
temporary
irreversible
- 9. Multiple Choice
Which of the following tells you that a chemical change has occurred?
Change Shape
Melting
Vaporizing
Change in color
- 10. Multiple Choice
What happens in ALL chemical changes?
Change in state of matter
A new substance is formed
Bubbles are produced
An explosion
- 11. Multiple Choice
Is wood burning a physical or chemical change?
Physical
Chemical
- 12. Multiple Choice
Is copper tarnishing a physical or chemical change?
Physical
Chemical
- 13. Multiple Choice
In a chemical reaction, how do the reactants compare to the products?
They are the same
They are different
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