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5 Written questions

5 Matching questions

  1. The tendency of water molecules to stick to each other is called
  2. What is an ionic compound?
  3. What is a radioactive isotope?
  4. What is a hydrogen bond?
  5. What is ion?
  1. a Formed when a particularly positive atom from one polar molecule is attracted to the partially negative atoms in another molecule.
  2. b is one in which the nucleus decays, giving off particles of energy.
  3. c A compound held together by ionic bonds.
  4. d cohesion
  5. e The term for atoms that are electronically charged as a result of gaining/losing electrons.

5 Multiple choice questions

  1. Protons and neutrons.
  2. 2.
  3. The sum of the number of protons and neutrons in its nucleus.
  4. A subatomic particle w/ a single unit of positive electrical charge (+)
  5. 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 True/False questions

  1. Which part of the atom has the most energy?The outer shell.


  2. What is a chemical reactions?Changes is the chemical compound of matter.


  3. What are the three types of chemical bonds?Ionic


  4. What physical states is matter found in?Solid


  5. What determines the chemical properties of an atom?The number of electrons in the outermost shell.


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