Chemical Change And Conservation Of Matter Question Preview (ID: 50645)


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

Physical change is:
a) The change in identity of a substance.
b) The change in nature of a substance.
c) The burning of fuel.
d) None of the choices.

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

Photosynthesis is a:
a) Physical Change.
b) Chemical Change.
c) Both
d) None

Boiling of water is a:
a) Physical Change.
b) Chemical Change.
c) Both
d) None

Action of vinegar on marble is a:
a) Physical Change.
b) Chemical Change.
c) Both
d) None

Digestion of food is a:
a) Physical Change.
b) Chemical Change.
c) Both
d) None

During a physical change:
a) Color changes.
b) Gas releases.
c) Energy exchanges.
d) None of the choices.

The evolution of air bubbles when water is heated means that:
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 choices.

A gas is released from a chemical reaction means there is a:
a) Change of state.
b) Physical Change.
c) Formation of water vapor.
d) None of the choices.

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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