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Twelfth Grade (Grade 12) Bonds and Mixing Questions

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Grade 12 Bonds and Mixing
The sugar used in a crystal-making experiment is a(n)                .
  1. solute
  2. solvent
  3. supersaturate
  4. atom
Grade 12 Bonds and Mixing
In a crystal-making experiment, the water is the                .
  1. solute
  2. solvent
  3. supersaturate
  4. mixture
Grade 12 Bonds and Mixing
Which of the following parameters increases with a decrease in the size of a bonding pair of electrons?
  1. Electronegativity
  2. Ionization potential
  3. Hydration energy
  4. Solvation energy
Grade 12 Bonds and Mixing
The water molecule has many special properties. Which of the following occurs because of water’s cohesive behavior?
  1. Water is able to cool down and heat up slowly.
  2. Water is able to float in solid form.
  3. Water is able to dissolve many substances.
  4. Water is able to move from the roots to the leaves of plants.
Grade 12 Bonds and Mixing
The following graph shows how the concentration (amount per unit volume) changes with
time. What information can be obtained from the data?
  1. The amount of reactant does not change with time
  2. The amount of product is decreasing
  3. The amount of reactant first decreases and then stays constant.
  4. After 500 seconds, all of the reactant is used.
  5. At 300 seconds, the concentration of the reactant is at maximum.
Grade 12 Bonds and Mixing
How many [math]Pi[/math] bonds are present in an acetylene molecule?
  1. one [math]Pi[/math] bonds
  2. two [math]Pi[/math] bonds
  3. three [math]Pi[/math] bonds
  4. four [math]Pi[/math] bonds
Grade 12 Bonds and Mixing
Which type of chemical bond forms when electrons are either gained or lost by an atom?
  1. ionic
  2. covalent
  3. metallic
  4. Van Der Waals
Grade 12 Bonds and Mixing
In which type of chemical bond are electrons shared between two atoms?
  1. ionic
  2. covalent
  3. metallic
  4. Van Der Waals
Grade 12 Bonds and Mixing
A pharmacist has 20L of a 10% drug solution. How many liters of 5% solution must be added to get a mixture that is 8%?
  1. 10 and 1/3 Liters
  2. 11 and 1/3 Liters
  3. 12 and 1/3 Liters
  4. 13 and 1/3 Liters
Grade 12 Bonds and Mixing
Which of the following is an example of column chromatography?
  1. Ion-exchange chromatography
  2. Gas-solid chromatography
  3. Thin layer chromatography
  4. Gas-liquid chromatography
Grade 12 Bonds and Mixing
How many gallons of a 12% indicator solution must be mixed with a 20% indicator solution to get 10 gallons of a 14% solution?
  1. 7 and 1/2 gallons
  2. 8 and 1/2 gallons
  3. 9 and 1/2 gallons
  4. 10 and 1/2 gallons
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