Chemistry of Life Crossword Puzzle

basic unit of matter
positively charged particles
particles with no charge
negatively charged particle; located outside the atomic nucleus
substance made up of only one kind of atom
atoms of the same element that contain different number of neutrons
atom or group of atoms that has acquired a positive or negative charge as a result of gaining or losing electrons
bond formed by the sharing of electrons between atoms
smallest unit of most compunds
attraction between molecules of the same substance
mixture of water and non-dissolved materials
element or compound produced by a chemical reaction
energy needed to get a reaction started
substance that speeds up the rate of a chemical reaction
protein that acts as a biological catalyst
compound that forms hydrogen ions in solution
large compound formed from combinations from many monomers
small unit that can form together with other small units to create a polymer
compound that produces hydrogen ions in solution
a scale from 0 to 14 reflecting the concentration of hydrogen ions in solution