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5 Written questions

5 Matching questions

  1. reactant
  2. macromolecule
  3. acid
  4. polar molecule
  5. mixture
  1. 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).
  2. b molecule with oppositely charged regions
  3. c large molecule formed by joining smaller organic molecules together
  4. d substance that releases hydrogen ions (H+) when dissolved in water; an acidic solution has a pH less than 7.
  5. 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

  1. homogeneous mixture formed when a substance (the solute) is dissolved in another substance (the solvent).
  2. substance formed by a chemical reaction; located on the right side of the arrow in a chemical equation.
  3. organic compound made of amino acids joined by peptide bonds; primary building block of organisms.
  4. large molecule formed from smaller repeating units or identical, or nearly identical, compounds linked by covalent bonds.
  5. substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.

5 True/False questions

  1. nucleic acida subunit of nucleic acid formed from a single sugar, a phosphate group, and a nitrogenous base.

          

  2. atombuilding block of matter; contains subatomic particles—neutrons, protons, and electrons

          

  3. substratesubstance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.

          

  4. covalent bondelectrical attraction between two oppositely charged atoms or groups of atoms.

          

  5. carbohydratereactant to which an enzyme binds

          

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