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