<em>The periodic table helps people understand what a substance's atoms can contain, which also provides information on how it can perform a specific action, or how well it can act as a base and so on. When people understand what something is made of, we can figure out what it can be used for. This makes it easier for workers to construct important structures.</em>
<em>Hope this helps and have a nice day.</em>
<em>-Sayonara</em>
As the air molecules move through the valve they have friction as they hit the walls, and its this friction that causes it to heat up.
<span>Inside the nucleus of an atom are protons and electrons. </span>
