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