Concept explainers
(a)
Interpretation:
Saliva has to be labelled as either a pure substance or a mixture.
Concept Introduction:
Pure substance:
A pure solution is made of a single component.
Example:
Water is pure substance as it contains two hydrogen atoms and one oxygen atom.
Mixture:
A mixture is said to be a combination of two or more pure substances which retains their own identities.
Mixture may be a homogeneous mixture or heterogeneous mixture.
(b)
Interpretation:
Table salt (sodium chloride) has to be labelled as either a pure substance or a mixture.
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
Wine has to be labelled as either a pure substance or a mixture.
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
Helium inside of a balloon has to be labelled as either a pure substance or a mixture.
Concept Introduction:
Refer to part (a).
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Chapter 1 Solutions
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