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Ninth Grade (Grade 9) Molecules and Compounds Questions

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Grade 9 Molecules and Compounds
Choose the choice that correctly describes a polar molecule.
  1. A molecule with no charge
  2. A molecule at the far end of something
  3. A molecule in the middle of something
  4. A molecule with a slight charge
Grade 9 Molecules and Compounds
H3O+ is named
  1. peroxide.
  2. hydroxide.
  3. hydronium.
  4. ammonium.
Grade 9 Molecules and Compounds
Which of the following pair of chemical species constitute the buffer system of human blood?
  1. H2CO3,HCO-3
  2. H2PO-4,HPO2-4
  3. NH3,NH+4
  4. HSO+3,SO2-3
Grade 9 Molecules and Compounds
Which is an example of a colloid?
  1. salad dressing
  2. salt dissolved in water
  3. blood
Grade 9 Molecules and Compounds
Grade 9 Molecules and Compounds
Grade 9 Molecules and Compounds
Grade 9 Molecules and Compounds
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