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Elements, Compounds & Mixtures
Test Description: Test your knowledge on these three ways matter takes form.
Instructions: Answer all questions to get your test result.
1) A pure substance made of two or more elements that are chemically combined is called a:
A
compound
B
solution
C
suspension
D
mixture
2) How is a mixture different from a compound?
A
Each substance in a mixture keeps most of its characteristic properties.
B
Mixtures have two or more components.
C
Solids, liquids, and gases can form mixtures.
D
Mixtures are commonly found in nature.
3) Which factor does not increase the speed at which a solid solute dissolves in water?
A
crushing the solute
B
stirring or shaking the mixture
C
adding more solute
D
heating the mixture
4) Metals, nonmetals, and metalloids are characteristic properties of:
A
substances
B
alloys
C
compounds
D
elements
5) Compounds are not random combinations of elements. They have a specific:
A
chemical composition
B
mass ratio
C
concentration
D
density
6) Which of the following substances can be separated into simpler substances only by chemical means?
A
water
B
gold
C
sodium
D
salt water
7) A(n) ____________________ can be separated by filtation.
A
compound
B
colloid
C
element
D
suspension
8) The substance that dissolves to form a solution is the:
A
alloy
B
colloid
C
solvent
D
solute
9) Which of the following are considered pure substances?
A
neither elements nor compounds
B
both elements and compounds
C
elements
D
compounds
10) Which of the following are NOT considered mixtures?
A
suspensions
B
compounds
C
solutions
D
colloids
*select an answer for all questions
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