Study

Gr. 12 IB First day

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  • Name the following ionic compound: LiNO3
    Lithium nitrate
  • A row on the periodic table is called a ________. A column on the periodic table is called a ______________.
    Period
  • How many valence electrons does oxygen have?
    6
  • Dissolving is a ___________________ change
    physical
  • When nitrogen forms an ion what charge does it become?
    -3
  • How many atoms in Ca3(PO4)3
    18
  • Bromine belongs to which group on the periodic table?
    Halogens
  • Balance the following chemical equation: ___CH4 + ____O2 --> ___ CO2 + ___ H2O
    1, 2, 1, 2
  • Alkali metals (group 1) have a charge of _______when they form ions
    +1
  • How many neutrons does sodium have?
    12
  • Name 3 pieces of evidence that a chemical change has occurred
    Heat/light, bubbles, colour change, odour change, precipitate
  • Name the following molecule: NH3
    Nitrogen trihydride
  • Argon is found in group _____
    18
  • When molecular compounds have four atoms of a particular element what prefix is used?
    Tetra
  • Name the following molecular compound: N2O4
    Dinitrogen tetroxide