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Grade 7 Chemistry
Test Description: Chemistry
Instructions: Answer all questions to get your test result.
1) 1- A hydrometer is used to measure
A
temperature of liquid
B
density of liquid
C
mass of liquid
2) 2- An example on mixture
A
distilled water
B
nitrogen gas
C
fresh orange juice
3) 3- An example on pure substance:
A
alcohol
B
strawberry juice
C
liquid milk
4) 4- The density of sugar water changes when
A
we add sugar to the mixture
B
all of the above
C
we add water to the mixture
5) 5- A pure substance is formed of
A
one substance
B
two substances
C
more than one substance
6) Copper is a mixture
A
False
B
True
7) liquid Coffee is a mixture
A
True
B
False
8) Substances having constant physical properties are called:
A
mixture
B
pure substances
9) 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
10) The density and the boiling point are:
A
Measurable physical properties
B
Chemical properties
C
Descriptive physical properties
*select an answer for all questions
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