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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 Mattercourse for Grade 7 students.
Instructions: Answer all questions to get your test result.
1) Physical change is:
A
None of the choices.
B
The burning of fuel.
C
The change in nature of a substance.
D
The change in identity of a substance.
2) Chemical change is:
A
The change from ice into water.
B
The change in shape (form), size and state of a substance without modification in the identity of a substance.
C
The change in the identity of a substance.
D
All of the choices.
3) Photosynthesis is a:
A
Both
B
Chemical Change.
C
Physical Change.
D
None
4) Boiling of water is a:
A
Physical Change.
B
None
C
Chemical Change.
D
Both
5) Action of vinegar on marble is a:
A
Both
B
Chemical Change.
C
Physical Change.
D
None
6) Digestion of food is a:
A
Both
B
Physical Change.
C
Chemical Change.
D
None
7) During a physical change:
A
Gas releases.
B
None of the choices.
C
Energy exchanges.
D
Color changes.
8) The evolution of air bubbles when water is heated means that:
A
The total mass of reactants is greater than that of the products.
B
The total mass of reactants is less than that of the products.
C
None of the choices.
D
The total mass of reactants is equal to that of the products.
9) A gas is released from a chemical reaction means there is a:
A
Change of state.
B
Formation of water vapor.
C
Physical Change.
D
None of the choices.
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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