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8.P.1.1
Test Description: Matter
Instructions: Answer all questions to get your test result.
1) What is the smallest unit of an element?
A
molecule
B
proton
C
atom
D
crystal
2) Which is one characteristic of some pure substances?
A
They can be homogeneous or heterogeneous.
B
They contain different types of molecules.
C
They cannot be physically separated
3) Which best describes an element?
A
It is the simplest form of matter.
B
It can be changed into a compound.
C
It is composed of more than one type of atom.
D
It can be broken down into simpler mixtures.
4) Which is the best description of one particle of table salt? (NaCl)
A
element
B
mixture
C
compound
5) When elements chemically combine, what do they form?
A
atoms
B
compounds
C
mixture
D
electroms
6) A substance contains 2 components joined by physical means. What best describes the substance?
A
electron
B
mixture
C
compound
D
element
7) An example of a homogeneous mixture is?
A
trail mix
B
gold
C
granite
D
salt water
8) An example of a heterogeneous mixture is?
A
salt water
B
tossed salad
C
milk
D
gold
9) Which is an example of an element?
A
air
B
salt
C
gold
D
salt water
10) Which is a pure substance
A
element
B
mixture
C
element and compound
D
compound
*select an answer for all questions
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