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Chemical Change And Conservation Of Matter
Test Description: Chemical reactions play an important role in our daily life. This game aims to review Chemical Change and Conservation of Matter course for Grade 7 students.
Instructions: Answer all questions to get your test result.
1) Physical change is:
A
None of the above.
B
The change in shape (form), size and state of a substance without modification in the identity of a substance.
C
The change in identity of a substance.
D
The burning of fuel.
2) Chemical change is:
A
The change in shape (form), size and state of a substance without modification in the identity of a substance.
B
The change from ice into water.
C
All of the above.
D
The change in the identity of a substance.
3) Respiration is a:
A
Both.
B
Chemical Change.
C
Physical Change.
D
none
4) Pulverizing chalk is a:
A
Physical Change.
B
both
C
none
D
Chemical Change.
5) Rusting of iron is a:
A
Chemical Change.
B
None.
C
Both.
D
Physical Change.
6) Photosynthesis is a:
A
both
B
Chemical Change.
C
Physical Change.
D
none
7) During a chemical change:
A
Gas releases.
B
All of the above.
C
Color changes.
D
Energy exchanges
8) When a gas is released from a chemical reaction:
A
The total mass of reactants is less than that of the products.
B
None of the above
C
The total mass of reactants is greater than that of the products.
D
The total mass of reactants is equal to that of the products.
9) The evolution of air bubbles when water is heated is an indication of:
A
Formation of water vapor.
B
All of the above.
C
Change of state.
D
Physical Change
10) During a chemical reaction, mass is conserved. This is:
A
Newton’s Law.
B
Dalton’s Law.
C
Lavoisier’s Law.
D
Volta’s Law
*select an answer for all questions
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