5 Written questions
5 Matching questions
- polar molecule
- a combination of two or more different substances in which each substance keeps its individual characteristics; can have a uniform composition (homogeneous) or have distinct areas of substances (heterogeneous).
- b molecule with oppositely charged regions
- c large molecule formed by joining smaller organic molecules together
- d substance that releases hydrogen ions (H+) when dissolved in water; an acidic solution has a pH less than 7.
- e substance that exists before a chemical reaction starts; located on the left side of the arrow in a chemical reaction.
5 Multiple choice questions
- homogeneous mixture formed when a substance (the solute) is dissolved in another substance (the solvent).
- substance formed by a chemical reaction; located on the right side of the arrow in a chemical equation.
- organic compound made of amino acids joined by peptide bonds; primary building block of organisms.
- large molecule formed from smaller repeating units or identical, or nearly identical, compounds linked by covalent bonds.
- substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.
5 True/False questions
nucleic acid → a subunit of nucleic acid formed from a single sugar, a phosphate group, and a nitrogenous base.
atom → building block of matter; contains subatomic particles—neutrons, protons, and electrons
substrate → substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.
covalent bond → electrical attraction between two oppositely charged atoms or groups of atoms.
carbohydrate → reactant to which an enzyme binds