The Power of Electricity Crossword

The flow of electrons is measured in units
All matter such as solids, liquids, and gases, is composed of...
Any material that is composed of only one type of atom
Any material that is composed of more than one type of atom
Materials have free electrons and allow electrical current to flow easily
if some outside force acts upon the material, this flow of electrons can be directed through materials and this flow
a naturally occurring force that exists all around us
the smallest and lightest of the particles in an atom
Electrons are said to have a negative charge, which means that they seem to be surrounded by a kind of invisible force field
When the valence electron in any atom gains sufficient energy from some outside force, it can break away from the parent atom
Many materials do not have any free electrons. Because of this fact, they do not tend to share their electrons very easily and do not make good conductors of electrical currents
much larger and heavier than electrons
energy of an electron is restricted to a few particular energy levels
electrons are arranged in several layers
outer shell of any atom