1. Atoms composed of the same numbers of protons and electrons, but different numbers of neutrons, are called a. isomers. c. isotopes. b. ions. d. organic atoms. 2. Substances that dissolve in water include all of the following except a. lipids. c. proteins. b. glucose. d. salts.

1. Isotopes are atoms of the same element that have an equal number of protons but different numbers of neutrons. Example includes; C∧12, C∧13 and C∧14 for Carbon, H∧1 , H∧2 and H∧3 for Hydrogen.

2. Lipids are organic compounds that includes fats and oils, waxes, phospholipids, and steroids. They are non-polar molecules and thus do not interact appreciably with water.

____ 1. Atoms composed of the same numbers of protons and electrons, but different numbers of neutrons, are called a. isomers. c. isotopes. b. ions. d. organic atoms. ____ 2. Substances that dissolve in water include all of the following except a. lipids. c. proteins. b. glucose. d. salts.

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1. Atoms composed of the same numbers of protons and electrons, but different numbers of neutrons, are called a. isomers. c. isotopes. b. ions. d. organic atoms. 2. Substances that dissolve in water include all of the following except a. lipids. c. proteins. b. glucose. d. salts.