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5 Written questions

5 Matching questions

  1. What are ionic bonds?
  2. Difference between covalent and ionic bonds?
  3. What are the two strong chemical bonds?
  4. What are covalent bonds? Single? Double?
  5. What is a compound?
  1. a Covalent bonds are the SHARING of electrons, whether it be equally or unequally
    Ionic bonds are the GAINING or LOSING of electrons, NOT SHARING
  2. b Two or more atoms SHARING ELECTRONS.
    Single covalent bonds - sharing of one pair of valence electrons
    Double - sharing of two pairs of valence electrons
  3. c Covalent bonds (STRONGEST) and Ionic bonds.
  4. d a substance consisting of two or more different elements combined in a fixed ratio.
  5. e Electron gaining or losing; e⁻ TRANSFER (NOT SHARING) between two atoms

5 Multiple choice questions

  1. 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
  2. Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.
  3. Protons - positive; in nucleus; 1 dalton (or amu)
    Neutrons - neutral; in nucleus; 1 dalton (or amu)
    Electrons - negative; found outside nucleus; 0 nothing
  4. A compound has characteristics different from those of its elements. Table salt, for example, is sodium chloride (NaCl), a compound composed of the elements sodium (Na) and chlorine (Cl) in a 1:1 ratio. Pure sodium is a metal, and pure chlorine is a poisonous gas. When chemically combined, however, sodium and chlorine form an edible compound.
  5. Polar covalent bond.
    (it's when there's more than one polar molecule that hydrogen bonding takes place)

5 True/False questions

  1. What is the atomic mass?The number of protons in an atom.

          

  2. What's a positive ion called? A negative ion?One atom's attraction of the electrons within one covalently bonded molecule
    O > N > C > H
    Oxygen - most electronegative element

          

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

          

  4. What are our 6 Essential Elements?CHNOPS: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur

          

  5. What are isotopes?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

          

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