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