Answers can be found at www.pearsonhighered.com/floyd
1. An atom is the smallest particle in an element.
2. An electron is a negatively charged particle.
3. An atom is made up of electrons, protons, and neutrons.
4. Electrons are part of the nucleus of an atom.
5. Valence electrons exist in the outer shell of an atom.
6. Crystals are formed by the bonding of atoms.
7. Silicon is a conductive material.
8. Silicon doped with p and n impurities has one pn junction.
9. The p and n regions are formed by a process called ionisation.
Electronics 143 