Chapter 2 Crossword 1

1. the fixed amount of energy that a system described by quantum mechanics, such as a molecule, atom, electron, or nucleus, can have
6. high-energy particles with very little mass
7. a solution in which no more solute can dissolve
10. the separating of a molecule into simpler molecules, atoms, radicals, or ions
11. The simplest particle of an element
12. a compound or atom involved in a chemical reaction
13. a chemical that reduces the amount of activation energy needed for a reaction but not for a reactant
14. positive and negative electrical charges attract each other
16. a subatomic particle with a positive charge
17. any substance that increases the concentration or hydrogen ions when added to a water solution
19. a mixture in which one or more substances are uniformly dissolved in another substance
21. a subatomic particle with no electrical charge

1. a chemical reaction that involves a net release of free energy
2. anything that occupies space and has mass
3. one water molecule, H2O, dissociates to form two ions
4. a solution in which water is the solvent
5. a chemical reaction in which a reactant gains one or more electrons, becoming more negative in charge
8. a chemical reaction in which a reactant loses one or more electrons
9. adhesive substance, heat, or pressure
15. a pure substance that is made up of two or more elements
18. chemical that neutralizes small amounts of acids or bases added to a solution
20. The ability to do work