Vocab chap. 6+7

3. energy the energy stored in chemical bonds
4. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
6. bond the attraction between a metal cation and the shared electrons that surround it
8. replacement reaction a chemical reaction in which one element takes the place of another element in a compound
11. bond the force that holds atoms or ions together as a unit
12. an ion with a negative charge
14. new substances formed as a result of a chemical reaction
16. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
18. replacement reaction a chemical reaction in which two compounds exchange positive ions and form new compounds

1. bond a chemical bond in which two atoms share a pair of valence electrons
2. reaction a chemical reaction in which a compound breaks down into two or more simpler substances
5. a substance that undergoes change in a chemical reaction
7. formula notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
9. dot diagram a diagram of an atom, ion or molecule in which each dot represents a valence electron
10. a neutral group of atoms that are joined together by one or more covalent bonds
11. an ion with a positive charge
13. bond the force that holds cations and anions together
15. reaction a chemical reaction in which two or more substances react to form a single substance
16. equation a representation of a chemical reaction in which the reactants and products are expressed as formulas
17. an atom or group of atoms that has a positive or negative charge