Chapter18 Vocab

4. A way of representing atoms or molecules by showing electrons as dots surrounding the element symbol.
5. Elements combine to form chemical compounds that are often divided into two categories.
6. a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule
10. Electrons can take on any energy within an unfilled band.
11. A Nonpolar Covalent Bond is created when atoms share their electrons equally.
15. A polar covalent bond is a covalent bond in which the atoms have an unequal attraction for electrons and so the sharing is unequal.
16. Chemical reactions result when the electrons of various atoms rearrange themselves so that there is a net attractive force between atoms called chemical bonds.
17. Chemical reactions result when the electrons of various atoms rearrange themselves so that there is a net attractive force between atoms called chemical bonds.
18. The sharing of a pair of electrons represents a single covalent bond, usually just referred to as a single bond.
19. any of a group of rare gases that include helium, neon, argon, krypton, xenon, and sometimes radon and that exhibit great stability and extremely low reaction rates.

1. built up from the level closest to the nucleus outward.
2. a molecule that has a charge on one side of the molecule, that is not cancelled out.
3. Atoms have equal number of electrons and protons with a net charge equal to zero.
7. type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
8. adjacent atoms will form multiple bonds with each other.
9. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
12. when an electron relocates from an atom or molecule to another such chemical entity.
13. consists of the mutual sharing of one or more pairs of electrons between two atoms.
14. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
16. a substance made from two or more different elements that have been chemically joined.