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5 Written questions

5 Matching questions

  1. What are isotopes?
  2. The number of shells an atom has depends on what?
  3. What is ion?
  4. What is a radioactive isotope?
  5. What is an electron?
  1. a the number of electrons it has.
  2. b The term for atoms that are electronically charged as a result of gaining/losing electrons.
  3. c is one in which the nucleus decays, giving off particles of energy.
  4. d Elements that exist in different forms
    Forms of an element that differ in mass
    Same num of protons and electrons but diff num of neutrons
  5. e A subatomic particle w/ a negative charge.

5 Multiple choice questions

  1. The number of electrons in the outermost shell.
  2. The number of protons in an atom.
  3. 25.
  4. Atoms held together by covalent bonds.
  5. 2.

5 True/False questions

  1. What makes up the nucleus?Protons and neutrons.

          

  2. The tendency of water molecules to stick to each other is calledthe number of electrons it has.

          

  3. What is a hydrogen bond?Forms when 2 atoms share 1 or more pairs of outer shell electrons and forms a molecule.

          

  4. What is an atom?A subatomic particle w/ a single unit of positive electrical charge (+)

          

  5. What is an ionic bond?A compound held together by ionic bonds.