Biology C1 Vocab Quiz

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Across
  1. 3. a substance that dissolves in water to form hydroxide ions (OH-)that can accept hydrogen ions
  2. 4. the process by which particles in a solution are evenly distributed throughout the solvent by Brownian motion
  3. 5. a particle consisting of two or more atoms covalently bonded together, formed between two nonmetals
  4. 8. a pure substance made from two or more elements that are chemically combined
  5. 9. anything that takes up space and has mass
Down
  1. 1. a substance that is present before a chemical reaction and takes part in it. It is usually shown on the left-hand side of a chemical equation.
  2. 2. A change in substance that does not change the identity of the substance (a change of form or state)
  3. 3. an electrostatic attraction that forms between atoms when they share or transfer electrons
  4. 6. a naturally occurring catalyst, usually a protein.
  5. 7. the building blocks of matter; the smallest possible particle of an element
  6. 8. a substance that changes the rate of a chemical reaction but is not itself used up or affected by the reaction