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 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).
- c negatively charged particle that occupies space around an atom's nucleus.
- d building block of matter; contains subatomic particles—neutrons, protons, and electrons
- e protein that speeds up a biological reaction by lowering the activation energy needed to start the reaction
5 Multiple choice questions
- large molecule formed from smaller repeating units or identical, or nearly identical, compounds linked by covalent bonds.
- mixture that can react with an acid or a base to maintain the pH within a specific range.
- organic compound containing carbon, hydrogen, and oxygen in a ratio of on oxygen and two hydrogen atoms for each carbon atom.
- substance dissolved in a solvent.
- reactant to which an enzyme binds
5 True/False questions
nucleotide → a subunit of nucleic acid formed from a single sugar, a phosphate group, and a nitrogenous base.
compound → pure substance with unique properties; formed when two or more different elements combine.
amino acid → carbon compound joined by peptide bonds; building block of proteins.
ionic bond → type of chemical bond formed when atoms share electrons.
polar molecule → large molecule formed by joining smaller organic molecules together