Online labs include: Mixture Separation Living in a Thirsty World Matter and Change Why it Matters

Nonmetallic Elements
Figure 3.4
(a) Carbon
(b) Sulfur
(c) Phosphorus
(d) Iodine
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Matter and Change

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The elements in Group 18 of the periodic table are the noble gases. 
These elements are generally unreactive, although some can be made to 
form compounds, such as xenon hexafluoroplatinate. Low reactivity 
makes the noble gases very different from the other families of elements. 
Group 18 elements are gases at room temperature. Neon, argon, krypton, 
and xenon are all used to make lighted signs, like the one in 
Figure 3.5
. 
As you look from left to right on the periodic table, you can see that 
the metalloids are found between the metals and the nonmetals.