5 Written questions
5 Matching questions
- a substance formed by a chemical reaction; located on the right side of the arrow in a chemical equation.
- b substance that releases hydrogen ions (H+) when dissolved in water; an acidic solution has a pH less than 7.
- c substance that speeds up a chemical reaction by reducing the activation energy.
- d atom that is negatively or positively charged because it have lost or gained one or more electrons.
- e measure of the concentration of hydrogen ions (H+) in a solution.
5 Multiple choice questions
- large molecule formed by joining smaller organic molecules together
- substance in which another substance is dissolved.
- molecule with oppositely charged regions
- particle without a charge in an atom's nucleus
- positively charged particle in an atom's nucleus.
5 True/False questions
amino acid → substance that releases hydrogen ions (H+) when dissolved in water; an acidic solution has a pH less than 7.
compound → pure substance with unique properties; formed when two or more different elements combine.
solution → homogeneous mixture formed when a substance (the solute) is dissolved in another substance (the solvent).
reactant → pure substance composed of only one type of atom; cannot be broken down into another substance by physical or chemical means
nucleic acid → a subunit of nucleic acid formed from a single sugar, a phosphate group, and a nitrogenous base.