6 Written Questions

1. the number of valence electrons in an atom, using dots placed around the symbol of an element as the electrons
2. tells you the ratio of elements in the compound, number is written to the lower right of a chemical symbol
3. a covalent bond in which two atoms share three pairs of electrons
4. a covalent bond in which two pairs of electrons are shared between two atoms
5. An orderly three dimensional pattern of ions or atoms in a solid
6. an electrical force linking atoms

6 Multiple Choice Questions

1. a chemical compound whose simplest units are molecules
   1. nonpolar bond
   2. polar bond
   3. molecular compound
   4. ionic compound
2. a chemical bond:
   one atom loses an electron = positive ion
   the other atom gains an electron = negative ion
   1. double bond
   2. ionic bond
   3. ionic compound
   4. polar bond
3. the outermost layer of electrons that are available to be lost, gained, or shared in the formation of chemical compounds
   1. molecule
   2. covalent bond
   3. valence electrons
   4. electrons
4. a bond formed when atoms share one or more pairs of electrons
   1. covalent bond
   2. triple bond
   3. double bond
   4. polar bond
5. two or more atoms held together by covalent bonds
   1. electrons
   2. ion
   3. crystal
   4. molecule
6. negatively charged particles found outside the nucleus
   1. ionic bond
   2. ion
   3. electrons
   4. molecule

6 True/False Questions

1. chemical formula → an electrical force linking atoms

   True        False

2. ion → atom that has a positive or negative charge

   True        False

3. ionic compound → a chemical bond:
   one atom loses an electron = positive ion
   the other atom gains an electron = negative ion

   True        False

4. polyatomic ion → a covalent bond in which electrons are shared unequally

   True        False

5. polar bond → a covalent bond in which electrons are shared equally

   True        False

6. nonpolar bond → a covalent bond in which electrons are shared equally

   True        False