(Chemical Reactions) And (Complete Combustion) 7 Question Preview (ID: 51489)


This Game Aims To Review (Chemical Reactions) And (Complete Combustion)courses For Grade 7 Students. TEACHERS: click here for quick copy question ID numbers.

Tearing a paper is:
a) Chemical change.
b) Physical change.
c) Endothermic
d) Exothermic.

Endothermic reactions involve:
a) Release of heat.
b) Production of electricity.
c) Production of fire.
d) Decrease in the temperature.

Exothermic reactions involve:
a) Increase in the temperature.
b) Absorption of heat.
c) No heat exchange.
d) Cooling down.

Butagas is a combustible material in the:
a) Solid state.
b) Liquid state.
c) Gaseous state.
d) A mixture of all.

Carbon dioxide:
a) Isa liquid.
b) Forms 21% of air.
c) Is the combusting agent.
d) None of the choices.

Breaking of glass is:
a) Physical change.
b) Exothermic.
c) Same as photosynthesis.
d) Exothermic.

Combustion is:
a) Exothermic.
b) Physical change.
c) Endothermic.
d) None of the choices.

Carbon monoxide is:
a) The combusting agent.
b) Combustible material.
c) Toxic.
d) None of the choices

Photosyntheis is:
a) A physical change.
b) An endothermic reaction.
c) An exothermic reaction.
d) None of the choices.

Carbon monoxide has a:
a) Red color.
b) Bad odor.
c) Bitter taste.
d) None of the choices.

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