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