Biology Ch. 2 Terms

3. having an asymmetrical shape because of differing charges
4. stored chemical energy that holds two atoms together
6. a substance that dissolves to form hydrogen ions
7. the smallest part of a covalent compound
10. physical stuff that makes up the universe
12. the starting materials of a chemical reaction
14. organic compounds made of carbons, hydrogen, and oxygens
16. basic building blocks of matter
18. the attraction of water to itself
19. containing carbon
20. also known as fats
21. the measure of the average speed of particles
23. the process by which one substance is broken into smaller pieces by another substance
24. the immaterial stuff that gets things done

1. a substance used to reduce a catalyst's undesired effects
2. the tendency of living things to spread out
3. the final materials in a chemical reaction
5. the tendency of particles to spread out
8. naturally-occurring catalysts in living things
9. made up of amino acids
11. the attraction of water to other substances
13. the basic building blocks of nucleic acids
14. a substance that provides an alternate rout from reactants to products that doesn't require as much energy
15. a substance that dissolves to form hydroxide ions
17. a pure substance made of two or more elements chemically combined
22. pure substances made of only one kind of atom