Grade 7 Chemistry Question Preview (ID: 53016)
Chemistry.
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1- A hydrometer is used to measure
a) density of liquid
b) mass of liquid
c) temperature of liquid
d)
2- An example on mixture
a) fresh orange juice
b) distilled water
c) nitrogen gas
d)
3- An example on pure substance:
a) liquid milk
b) alcohol
c) strawberry juice
d)
4- The density of sugar water changes when
a) we add water to the mixture
b) we add sugar to the mixture
c) all of the above
d)
5- A pure substance is formed of
a) one substance
b) two substances
c) more than one substance
d)
Copper is a mixture
a) True
b) False
c)
d)
liquid Coffee is a mixture
a) True
b) False
c)
d)
Substances having constant physical properties are called:
a) pure substances
b) mixture
c)
d)
Matter that is composed of two or more component substances which keeps their own properties is classified as:
a) a pure substance
b) a mixture
c)
d)
The density and the boiling point are:
a) Chemical properties
b) Descriptive physical properties
c) Measurable physical properties
d)
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