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E-C-M CMS 2021
Test Description: Fodipi 2021
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
solution
B
suspension
C
mixture
D
compound
2) How is a mixture different from a compound?
A
Mixtures are commonly found in nature
B
compounds are rare
C
Mixtures are rare
D
Each substance in a mixture keeps most of its physical properties
3) Which factor does not increase the speed at which a solid solute dissolves in water?
A
stirring or shaking the mixture
B
crushing the solute
C
adding more solute
D
heating the mixture
4) Metals, nonmetals, and metalloids are physical properties of:
A
alloys
B
elements
C
suspensions
D
solutions
5) Compounds are not random combinations of elements. They have a specific:
A
valence number
B
color
C
location
D
chemical ratio
6) Which of the following substances can be separated into simpler substances only by chemical means?
A
gold
B
sodium
C
water
D
saltwater
7) A(n) ____________________ can be separated by filtration.
A
suspension
B
colloid
C
solution
D
compound
8) The substance that dissolves to form a solution is the:
A
surface area
B
solvent
C
suspension
D
solute
9) Which of the following are considered pure substances?
A
neither elements nor compounds
B
both elements and compounds
C
elements only
D
compounds only
10) Which of the following are NOT considered mixtures?
A
compounds
B
solutions
C
colloids
D
suspensions
*select an answer for all questions
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