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