Across
- 2. substance that decreases activation energy and increases reaction rate in a chemical reaction.
- 4. attraction between molecules of different substances.
- 5. energy amount of energy needed to break a bond between two particular atoms; or the amount of energy released when a bond forms between two particular atoms.
- 7. acid molecule that makes up proteins; composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
- 9. chemical reaction that yields a net release of energy in the form of heat.
- 12. substance formed by a chemical reaction.
- 14. measurement of acidity; related to free hydrogen ion concentration in solution.
- 15. acid hydrocarbon chain often bonded to glycerol in a lipid.
- 17. compound that donates a proton (H+) when dissolved in solution.
- 18. atom that has gained or lost one or more electrons
- 20. bond chemical bond formed through the electrical force between oppositely charged ions.
- 22. protein that catalyzes chemical reactions for organisms.
- 23. two or more atoms held together by covalent bonds; not necessarily a compound.
- 26. substance that dissovles in a solvent and is present at a lower concentration that the solvent.
- 27. condition in which reactants and products of a chemical reaction are formed at the same rate.
- 28. reactant in a chemical reaction upon which an enzyme acts.
- 30. bond chemical bond formed when two atoms share one or more pairs of electrons.
- 32. reaction process by which substances change into different substances through the breaking and forming of chemical bonds.
- 34. large, carbon-based molecule formed by monomers.
Down
- 1. molecule composed of carbon, hydrogen, and oxygen; includes sugars and starches.
- 3. mixture (solvent + solute) that is consistent throughout; also called a homogenous mixture.
- 6. substance in which solutes dissolved and that is present in greater concentration in a solution.
- 8. substance that is changed by a chemical reaction.
- 10. bond attraction between a slightly positive hydrogen atom and a slightly negative atom.
- 11. substance made of atoms of different elements that are bonded together in a particular ratio.
- 13. energy energy input necessary to initiate a chemical reaction.
- 16. attraction between molecules of the same substance.
- 19. acid polymer of nucleotides; the genetic material of organisms.
- 21. compound that accepts a proton (H+) when dissolved in solution.
- 23. molecular subunit of a polymer.
- 24. chemical reaction that requires a net input of energy.
- 25. substance made of only one type of atom that cannot be broken down by chemical means.
- 29. polymer composed of amino acids linked by peptide bonds; folds into a particular structure depending on bonds between amino acids.
- 31. nonpolar molecule composed of carbon, hydrogen, and oxygen; includes fats and oils.
- 33. smallest basic unit of matter.