Chemical Change And Conservation Of Matter Question Preview (ID: 50495)


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. TEACHERS: click here for quick copy question ID numbers.

Physical change is:
a) The change in identity of a substance.
b) The change in shape (form), size and state of a substance without modification in the identity of a substance.
c) The burning of fuel.
d) None of the above.

Chemical change is:
a) The change in the identity of a substance.
b) The change from ice into water.
c) The change in shape (form), size and state of a substance without modification in the identity of a substance.
d) All of the above.

Respiration is a:
a) Physical Change.
b) Chemical Change.
c) Both.
d) none

Pulverizing chalk is a:
a) Physical Change.
b) Chemical Change.
c) both
d) none

Rusting of iron is a:
a) Physical Change.
b) Chemical Change.
c) Both.
d) None.

Photosynthesis is a:
a) Physical Change.
b) Chemical Change.
c) both
d) none

During a chemical change:
a) Color changes.
b) Gas releases.
c) Energy exchanges
d) All of the above.

When a gas is released from a chemical reaction:
a) The total mass of reactants is less than that of the products.
b) The total mass of reactants is greater than that of the products.
c) The total mass of reactants is equal to that of the products.
d) None of the above

The evolution of air bubbles when water is heated is an indication of:
a) Change of state.
b) Physical Change
c) Formation of water vapor.
d) All of the above.

During a chemical reaction, mass is conserved. This is:
a) Dalton’s Law.
b) Newton’s Law.
c) Volta’s Law
d) Lavoisier’s Law.

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