Science Grade 8 Question Preview (ID: 42551)


Science.

Define term sublimation
a) Process where a solid state changes
b) Process where solid state changes directly to gas state without going through a liquid state
c) Changing process
d) Neither

Rocks make soil through the process called
a) Weathering
b) whetering
c) Earhring
d) Neither

Name 2 processes that occur in rocks caused by high and low tempreatures
a) expansion
b) contraction
c) all
d) Neither

What happens to the particles making up the rocks service when the sun is shining
a) Temperature increases
b) Kinetic energy increases
c) Particles move faster and further apart
d) All

What is a chemical compound
a) A substance made of different elements
b) A substance made up of more than one different element chemically joined to each other
c) Neither
d) A compound

Name the products formed in a chemical reaction
a) mercury
b) oxygen
c) both
d) Neither

Mixture
a) Impure substance
b) Pure subtance
c) Combination
d) Neither

Compound
a) Elements
b) Pure substance
c) Mixture
d) Neither

Compound
a) The different elements are chemically joined together
b) Bind together
c) Seperated
d) Neither

Mixture
a) Bind together
b) mixture
c) The different elements are not chemically joined together
d) neither

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