Chemistry Reference
In-Depth Information
Figure 1.1
Classification
of Matter
Matter
Substances
Mixtures
Homogeneous
mixtures
(solutions)
Heterogeneous
mixtures
Elements
Compounds
EXAMPLE 1.3
Classify each of the following statements as true or false:
(a)
Every mixture contains two or more free elements.
(b)
Every compound is a substance.
(c)
Every compound contains two or more elements.
(d)
Every mixture contains two or more compounds.
(e)
Every substance is a compound.
(f )
All mixtures are homogeneous.
(g)
Every mixture contains two or more substances.
Solution
(a)
False (They may contain compounds and only one or no free elements.)
(b)
True
(c)
True
(d)
False (They may contain free elements or compounds or both.)
(e)
False (Some are free elements.)
(f )
False (Some are heterogeneous.)
(g)
True
Figure 1.2
Sugar Plus Water,
and Mud Plus Water
(a) Sugar dissolves in water and is
not distinguishable from the water; a
solution is formed. (b) Mud does not
dissolve in water; a heterogeneous
mixture is formed.
(a)
(b)
