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5 Written questions

5 Matching questions

  1. What is a molecule?
  2. What bond does a SINGLE molecule of water have? (H₂O)
  3. What are isotopes?
  4. What is an ion?
  5. What is a compound?
  1. a 2 or more atoms held together by covalent bonds
  2. b a substance consisting of two or more different elements combined in a fixed ratio.
  3. c Different forms of the same element; they differ in number of neutrons, but they have the same # of protons and behave identically in chemical reactions
  4. d Atoms that lose or gain electrons to complete their outer shell
  5. e Polar covalent bond.
    (it's when there's more than one polar molecule that hydrogen bonding takes place)

5 Multiple choice questions

  1. Positive ion = CATION
    Negative ion = ANION
  2. Non-polar covalent bond; they have equal electronegativity so they share their e⁻
  3. The making and breaking of chemical bonds.
    1. Reactants - structure of chemicals prior to a chemical reaction
    2. Reaction
    3. Products - structure of chemicals as a result of a chemical reaction
  4. Covalent bonds (STRONGEST) and Ionic bonds.
  5. CHNOPS: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur

5 True/False questions

  1. Do Hydrogen Bonds only occur with water molecules?Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.


  2. What is a chemical bond?a substance consisting of two or more different elements combined in a fixed ratio.


  3. 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


  4. Difference between an element and a compound?Covalent bonds are the SHARING of electrons, whether it be equally or unequally
    Ionic bonds are the GAINING or LOSING of electrons, NOT SHARING


  5. Define Subatomic particles, their charges, where they're found, and their relative mass.Protons - positive; in nucleus; 1 dalton (or amu)
    Neutrons - neutral; in nucleus; 1 dalton (or amu)
    Electrons - negative; found outside nucleus; 0 nothing


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