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Eleventh Grade (Grade 11) Molecules and Compounds Questions

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Grade 11 Molecules and Compounds
Which of the following helps to identify the specific intermolecular forces existing between molecules?
  1. bond type
  2. density
  3. solubility
  4. molecular polarity
Grade 11 Molecules and Compounds
When does a molecule tend to form?
  1. When 2 elements are combined
  2. When 2 or more atoms bond covalently
  3. When atoms disappear
  4. None of the above
Grade 11 Molecules and Compounds
The basic building blocks of proteins.
  1. Nucleic acid
  2. Amino Acids
  3. Disaccharides
  4. Chemosynthesis
Grade 11 Molecules and Compounds
How would you write the chemical formula for copper (II) nitrate on a labeled bottle for laboratory experiments?
  1. CuNO3
  2. Cu2NO3
  3. CuNO2
  4. Cu2NO2
  5. Cu(NO3)2
Grade 11 Molecules and Compounds
What are chemical compounds consisting of 3 elements called?
  1. Binary Compounds
  2. Ternary Compounds
  3. Molecular Compounds
  4. Hydrocarbons
Grade 11 Molecules and Compounds
Propane is a gas at STP, while bromine is a liquid at STP. Which statement correctly explains these observations?
  1. Bromine has weaker intermolecular forces than propane does.
  2. Bromine has greater molecular polarity than propane does.
  3. Bromine has weaker molecular polarity than propane does.
  4. Bromine has stronger intermolecular forces than propane does.
Grade 11 Molecules and Compounds
Which of the following is the correct formula for N2O5?
  1. nitrous oxide
  2. dinitrogen pentoxide
  3. nitrogen dioxide
  4. nitrate oxide
Grade 11 Molecules and Compounds
Which of the following statements correctly compares the behavior of a mixture of ethanol and water at STP?
  1. Water will evaporate first, because it has weaker intermolecular forces.
  2. Ethanol will evaporate first, because it has weaker intermolecular forces.
  3. Ethanol and water will evaporate simultaneously.
  4. The aqueous solution will evaporate partially at a temperature between the boiling points of water and of ethanol.
Grade 11 Molecules and Compounds
The molecules of which of the following move most freely?
  1. Solid
  2. Liquid
  3. Slush
  4. Gas
Grade 11 Molecules and Compounds
What is a compound composed of carbon and hydrogen called?
  1. Diatomic Element
  2. -ide
  3. Hydrocarbon
  4. Chemical Nomenclature
Grade 11 Molecules and Compounds
Every combination of atoms is NOT a molecule.
  1. True
  2. False
Grade 11 Molecules and Compounds
When two or more atoms are chemically combined, which of the following is produced?
  1. A mixture
  2. A substance
  3. A molecule
  4. A miscible substance
Grade 11 Molecules and Compounds
Which of the following would likely involve the presence of London dispersion forces?
  1. CF4
  2. HCl
  3. H2O
  4. MgO (aq)
Grade 11 Molecules and Compounds
Hydrogen bonds are a form of bonding.
  1. True
  2. False
Grade 11 Molecules and Compounds
Which of the following would experience boiling at the lowest temperature?
  1. CH4
  2. C2H6
  3. C3H8
  4. C4H10
Grade 11 Molecules and Compounds
The density of gas molecules is generally                   the molecules of a liquid or a solid.
  1. less than that of
  2. more than that of
  3. equal to that of
  4. none of the above
Grade 11 Molecules and Compounds
Molecules in a solid can be described as experiencing rapid                  .
  1. motion
  2. vibration
  3. sound
  4. none of the above
Grade 11 Molecules and Compounds
Avogadro's number is equal to                              molecules in a mole.
  1. 3.00×108
  2. 1.602×10-23
  3. 6.022×1023
  4. 6.22×1023
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