NAME: ________________________

Concepts in Bio - CH 2 Test

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5 Written Questions

5 Matching Questions

  1. solid
  2. ion
  3. molecules
  4. products
  5. compound
  1. a The phase of matter in which the molecules are packed tightly together; they vibrate in place
  2. b Electrically unbalanced or charged atoms
  3. c A kind of matter that consists of a specific number of atoms (or ions) joined to each other in a particular way and held together by chemical bonds
  4. d New molecules resulting from a chemical reaction
  5. e The smallest particles of a chemical compound; the smallest naturally occurring parts of an element or a compound

5 Multiple Choice Questions

  1. The attractive force formed between two atoms that share a pair of electrons
  2. An atom of the same element that differs only in the number of neutrons
  3. The number of protons in an atom
  4. compounds that release hydroxide ions or accept hydrogen ions in a solution
  5. forces that combine atoms or ions and hold them together

5 True/False Questions

  1. gasThe phase of matter in which the molecules are more energetic than the molecules of a liquid, resulting in only a slight attraction for each other

          

  2. soluteThe phase of matter in which the molecules are packed tightly together; they vibrate in place

          

  3. hydrogen bondsWeak attractive forces between molecules; important in determining how groups of molecules are arranged

          

  4. pHThe phase of matter in which the molecules are more energetic than the molecules of a liquid, resulting in only a slight attraction for each other

          

  5. protonThe particle in the nucleus of an atom that has a positive electrical charge

          

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