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5 Written questions

5 Matching questions

  1. What are valence electrons?
  2. What is the atomic mass?
  3. What is a chemical bond?
  4. What are non-polar covalent bonds?
  5. What is an ion?
  1. a The number of protons and neutrons in nucleus.
  2. b Atoms that lose or gain electrons to complete their outer shell
  3. c The electrons on the outermost orbital shell
  4. d The sharing of electrons EQUALLY; atoms have similar electronegativities
  5. e Atoms interacting with each other to share, take, or give electrons.

5 Multiple choice questions

  1. Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.
  2. CHNOPS: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
  3. Non-polar covalent bond; they have equal electronegativity so they share their e⁻
  4. Covalent bonds (STRONGEST) and Ionic bonds.
  5. Two or more atoms SHARING ELECTRONS.
    Single covalent bonds - sharing of one pair of valence electrons
    Double - sharing of two pairs of valence electrons

5 True/False questions

  1. What is the atomic number?The number of protons and neutrons in nucleus.

          

  2. Difference between covalent and ionic bonds?Covalent bonds are the SHARING of electrons, whether it be equally or unequally
    Ionic bonds are the GAINING or LOSING of electrons, NOT SHARING

          

  3. What are polar covalent bonds?The sharing of electrons UNEQUALLY; atoms have differing electronegativities

          

  4. What is an element?A substance that cannot be broken down to other substances by chemical reactions.

          

  5. Choose 2 elements essential to life, draw the electron configuration of each as an ion and note the charge of the ion.Ex: O - only 6 rings on outer shell, so it wants to gain 2, making it 2- charge