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13 questions
In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?
I
II
III
IV
Which beaker contains only one type of element?
A
B
C
D
Which beaker contains a compound?
A
B
C
D
Which beaker(s) contain a pure substance? (check all that apply)
A
B
C
D
Which is the best description of one particle of table salt (NaCl)?
mixture
compound
element
What is a pure substance made of two or more elements that are chemically combined called?
A. element
B. compound
C. mixture
Classify the Sample.
Pure Substance
Mixture of Elements
Mixture of Compounds
Mixture of Elements and Compounds
Classify the sample. Look carefully.
Pure Substance
Mixture of Elements
Mixture of Compounds
Mixture of Element and Compound
Which of the following formulas represents a compound?
4 He
5 O2 + 3 LiBr
2 MgO
Ag
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