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5 Written questions

5 Matching questions

  1. How many electrons can the 2nd and 3rd shell of an atom hold?
  2. What is a molecule?
  3. What is a neutron?
  4. What are isotopes?
  5. What is ion?
  1. a up to 8 electrons.
  2. b 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
  3. c Atoms held together by covalent bonds.
  4. d an electronically neutral subatomic particle.
  5. e The term for atoms that are electronically charged as a result of gaining/losing electrons.

5 Multiple choice questions

  1. Oxygen, carbon, hydrogen, and nitrogen.
  2. 25.
  3. Changes is the chemical compound of matter.
  4. Solid
  5. Formed when a particularly positive atom from one polar molecule is attracted to the partially negative atoms in another molecule.

5 True/False questions

  1. What is the atomic number?The smallest unit of matter that still retains the properties of an element.


  2. How many electrons can the inner shell of an atom hold?up to 8 electrons.


  3. The tendency of water molecules to stick to each other is calledcohesion


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


  5. The number of covalent bonds an atom can form is equal to what?the number of electrons it has.