Vocab

1. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
3. bond - the force that holds atoms or ions together as a unit
5. bond - a chemical bond in which two atoms share a pair of valence electrons
6. - a substance that undergoes change in a chemical reaction
7. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
9. - an ion with a negative charge
12. - an ion with a positive charge
13. reaction - a chemical reaction in which two or more substances react to form a single substance
15. reaction - a chemical reaction in which a compound breaks down into two or more simpler substances
16. - an atom or group of atoms that has a positive or negative charge

2. - a neutral group of atoms that are joined together by one or more covalent bonds
3. - numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
4. bond - the attraction between a metal cation and the shared electrons that surround it
8. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
10. - new substances formed as a result of a chemical reaction
11. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
14. bond - the force that holds cations and anions together