5 Written Questions
5 Matching Questions
- polar molecule
- chemical reaction
- a molecule with oppositely charged regions
- b building block of matter; contains subatomic particles—neutrons, protons, and electrons
- c negatively charged particle that occupies space around an atom's nucleus.
- d substance formed by a chemical reaction; located on the right side of the arrow in a chemical equation.
- e energy-requiring process by which atoms or groups of atoms in substances are changed into different substances
5 Multiple Choice Questions
- mixture that can react with an acid or a base to maintain the pH within a specific range.
- hydrophobic biological molecule composed mostly or carbon and hydrogen; fats, oils, and waxes are lipids
- particle without a charge in an atom's nucleus
- substance that releases hydrogen ions (H+) when dissolved in water; an acidic solution has a pH less than 7.
- large molecule formed by joining smaller organic molecules together
5 True/False Questions
molecule → substance dissolved in a solvent.
nucleic acid → complex macromolecule that stores and communicates genetic information.
reactant → substance that exists before a chemical reaction starts; located on the left side of the arrow in a chemical reaction.
nucleotide → a subunit of nucleic acid formed from a single sugar, a phosphate group, and a nitrogenous base.
solvent → substance dissolved in a solvent.