Across
- 2. A change in a substance that does not change the identity of the substance
- 4. A substance that changes the rate of a chemical reaction but is not itself used up or affected by the reaction
- 8. The process by which particles in solution are evenly distributed throughout the solvent by Brownian motion
- 10. The smallest particle of a covalently bonded compound
- 12. Quality of molecules having an uneven distribution of electrical charge, resulting in some regions of a molecule having negative charge while others are positive
- 14. The substances formed during a chemical reaction, usually indicated on the righthand side of a chemical equation
- 15. The attraction of particles in one substance to particles from another substance
- 18. The attraction between like particles within polar substances
- 19. A pure substance made from two or more elements that are chemically combined
- 20. An organic compound comprised of the elements carbon, hydrogen, and oxygen; includes sugars, starch and cellulose
- 21. The physical stuff that makes up the universe; anything that occupies space and has mass
- 22. The process by which a substance, the solute, is broken up into smaller pieces by and distributed into a second substance, the solvent
- 24. The ability to do work
- 25. A class of nonpolar organic compounds that are in soluble in water and are used for energy storage and cell membranes in living things
- 26. The tendency of energy to disperse and become less available to do work
- 27. A class of simple organic compounds important in living things as a source of both energy and structure
Down
- 1. A substance that is present before a chemical reaction and takes part in it, usually shown on the lefthand side of a chemical equation
- 3. A naturally occurring catalyst, usually a protein
- 5. A substance that ca produce hydrogen ions in a solution
- 6. An attraction between two atoms as a result of sharing or transferring valence electrons
- 7. A substance that can produce hydroxide ions or accept hydrogen ions in solution
- 9. A class of organic compounds that serve as the building blocks for the information storage molecules DNA and RNA
- 11. A covalently bonded compound containing the element carbon
- 13. A substance that binds to an enzyme and reduces its activity, thus slowing a chemical reaction that the enzyme catalyzes
- 15. A class of organic compounds that serve as the building blocks of proteins
- 16. A pure substance made of only one kind of atom
- 17. The building block of matter; the smallest possible particle of an element
- 23. A measurement of the average speed of the particles within a substance