Biology Ch 1-2

6. A pure substance made of only one kind of atom.
7. A molecule having an uneven distribution of electrical charge.
8. A substance that binds to an enzyme reducing its effectiveness.
11. A description based on repeated observations (often mathematical)
13. The building blocks of all matter.
15. A naturally occurring catalyst, usually a protein.
16. The process of one substance being broken up and dispersed in another.
18. The substances required to start a chemical reaction.
19. Anything that takes up space and has mass.
21. The substances formed during a chemical reaction.
22. The study of life.
23. A group of organic compounds primarily used to store energy.
29. A subset of observations gathered from within a larger possible set of data.
30. Using living systems to produce new products.
31. An electrostatic attraction that forms between two atoms.
32. The attraction of particles in one substance to those in another.

1. A group of organic molecules primarily used to store information.
2. Preservation and wise use of natural resources.
3. A substance that produces hydroxide ions (or absorbs hydrogen ions) in solution.
4. A change in a substance that does not alter its chemical identity.
5. A model that attempts to explain a set of observations.
9. The smallest particle of a covalently bonded compound.
10. The building blocks of proteins.
12. A substance that produces hydrogen ions in solution.
14. Any covalent compound containing carbon.
17. The attraction between like particles within a polar substance.
20. A substance that changes the rate of a chemical reaction without being used up.
23. A pure substance made from two or more bonded elements.
24. The process by which particles in solution are evenly distributed.
25. The ability to do work.
26. A group of nonpolar organic compounds including fats and steroids.
27. A simple, workable representation of a more complex object or concept.
28. A testable statement that predicts the answer to a question.