← MODULE 5 BIOLOGY 2 ed. Apologia part 2 Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All atom The basic building blocks of matter solution when one substnace is dissolved in another, resulting in a physical change. solute a substance being dissolved in the liquid solvent the liguid that the solute is being dissolved in. acid substances that tast sour and have a pH level under 7 neutral when a solution has a pH of 7. alkaline solutions with pH from just above 7 to 14 with characters of a base. enzymes are a special class of proteins that act as a catalyst for many of the chemical reactions that support life.