5 Written questions
5 Matching questions
- a pure substance with unique properties; formed when two or more different elements combine.
- b organic compound made of amino acids joined by peptide bonds; primary building block of organisms.
- c substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.
- d mixture that can react with an acid or a base to maintain the pH within a specific range.
- e substance that releases hydrogen ions (H+) when dissolved in water; an acidic solution has a pH less than 7.
5 Multiple choice questions
- substance in which another substance is dissolved.
- compound whose atoms are held together by covalent bonds
- pure substance composed of only one type of atom; cannot be broken down into another substance by physical or chemical means
- large molecule formed by joining smaller organic molecules together
- large molecule formed from smaller repeating units or identical, or nearly identical, compounds linked by covalent bonds.
5 True/False questions
isotope → positively charged particle in an atom's nucleus.
polar molecule → large molecule formed by joining smaller organic molecules together
nucleic acid → complex macromolecule that stores and communicates genetic information.
nucleus → center of an atom; contains neutrons and protons. In eukaryotic cells, the central membrane-bound organelle that manages cellular functions and contains DNA
solution → homogeneous mixture formed when a substance (the solute) is dissolved in another substance (the solvent).