Chapter Two

2. Would bleach be high or low on the pH scale?
5. A chemical reaction that releases more energy than it absorbs.
10. A chemical reaction that absorbs more energy than it releases.
11. Two or more atoms held together by covalent bonds.
12. What has the three fundamental structures; straight chains, branched chains, and rings?
14. Mixture of substances that is the same throughout.
15. Molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
17. The colvalent bons that amino acids form are called...?
19. Substances made by a chemical reaction.
20. Polymers that are made up of monomers called nucleotides.
22. What two molecules attach to a hydrogen to make a water molecule?
23. Amount of energy that will break a bond between two atoms.
25. Each subunit in a complete molecule.

1. A larger molecule, or macromolecule, made of many monomers bonded together.
3. Substance that is present in the greater amount and that dissolves another substance.
4. energy Amount of energy needed to start a chemical reaction.
6. A compound that releases a proton when it dissolves in water.
7. Changes substances into different substances by breaking and forming chemical bonds.
8. The substances that changes during a chemical reaction.
9. Bond that forms through the electrical force between oppositely charged ions.
13. Bond that forms when atoms share a pair of electrons.
16. Reached when both the reactants and products are made at the same rate.
18. Compounds that remove H+ ions from a solution.
21. Substance that dissolves in a solvent.
24. What are the two general types of nucleic acids?