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Matter 3
Test Description: Pure Substances and Mixtures
Instructions: Answer all questions to get your test result.
1) What are the smallest unit of an element that maintain the properties of that element?
A
Electrons
B
Molecule
C
Atoms
D
Compound
2) Which of these is an example of a compound?
A
He
B
H2O
C
H
D
O2
3) Which of the following is a type of pure substance?
A
Compound
B
Colloid
C
Solution
D
Heterogeneous Mixture
4) Which of the following would be considered an organic compound?
A
Rock
B
Gasoline
C
Air
D
Glass
5) What type of elements are shiny, solid, non-conductive, and non-malleable?
A
metals
B
nonmetals
C
Trick question, no such element exists!
D
metalloids
6) What happens when a pure substance undergoes a chemical change?
A
The chemical bonds that hold the atoms together are broken and form into new substances.
B
Nothing changes and it remains a pure substance.
C
The type of atoms stay the same, but are found in different proportions.
D
The substance changes into a mixture.
7) What type of properties are best for seperating mixtures?
A
Extrinsic properties
B
Physical properties
C
Chemical properties
D
Intrinsic properties
8) Which of the following a the BEST example of a suspension?
A
Hot Chocolate
B
Metal Alloy
C
Salad
D
Snow globe
9) Which of the following is NOT a colloid?
A
Milk
B
Geletin
C
Metal Alloy
D
Mayonaise
10) What is another name for a homogeneous solution?
A
Suspension
B
Solution
C
Pure Substance
D
Compound
*select an answer for all questions
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