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Tenth Grade (Grade 10) Molecules and Compounds Questions

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Grade 10 Molecules and Compounds
What is the formula of potassium permanganate?
  1. KMnO4
  2. KMnO2
  3. KMnO3
  4. KMnO5
Grade 10 Molecules and Compounds
Which statement explains why ethene does not dissolve in water?
  1. Ethene is polar and water is nonpolar.
  2. Ethene is nonpolar and water is nonpolar.
  3. Ethene is polar and water is polar.
  4. Ethene is nonpolar and water is polar.
Grade 10 Molecules and Compounds
Which of the following compounds has the highest percentage of oxygen?
  1. CH4O
  2. CO2
  3. H2O
  4. Na2CO3
Grade 10 Molecules and Compounds
STP refers to                  .
  1. 101.3 KPa
  2. 0ºC
  3. (a) and (b)
  4. none of the above
Grade 10 Molecules and Compounds
How many hydrogen atoms would you find in a butane molecule?
  1. 4
  2. 6
  3. 8
  4. 10
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