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5 Written questions

5 Matching questions

  1. What is an electron?
  2. What are isotopes?
  3. What is an atom?
  4. What is mass?
  5. What makes up the nucleus?
  1. a 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
  2. b A subatomic particle w/ a negative charge.
  3. c The sum of the number of protons and neutrons in its nucleus.
  4. d Protons and neutrons.
  5. e The smallest unit of matter that still retains the properties of an element.

5 Multiple choice questions

  1. the atomic number.
  2. The number of electrons in the outermost shell.
  3. The number of protons in an atom.
  4. Solid
  5. Substances that cannot be broken down into other substances.

5 True/False questions

  1. What is a hydrogen bond?Formed when a particularly positive atom from one polar molecule is attracted to the partially negative atoms in another molecule.


  2. How many electrons can the 2nd and 3rd shell of an atom hold?2.


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


  4. What is a neutron?an electronically neutral subatomic particle.


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