8 Questions
Which of the following compounds has an ideal molecular structure as determined by VSEPR?
SF6
Choose the correct statement regarding the polarity as well as the molecular shape of the BCl3 molecule.
The molecule has a trigonal planar shape and is nonpolar.
XY, is an imaginary polar molecule. Which of the following statements is true?
X's electronegativity will always be greater than that of Y.
CO2(s) sublimates easily. The intermolecular forces present are:
London forces
Which of the following has the weakest forces between the molecules of a pure sample of the substance?
F2
When connecting a 4 Ω resistor directly over the terminals of a 12 V battery without internal resistance, the amount of charge passing a point per second is:
3
The potential difference between any two points in a circuit is the:
amount of work done per coulomb charge moving between the two points.
Which of the following is the unit of measurement for the rate at which electrical energy is converted?
Watt
Study Notes
Molecular Structure and Polarity
- VSEPR determines the ideal molecular structure, which is exhibited by compounds like PCl5 and SF6.
- BCl3 has a trigonal planar shape and is nonpolar.
- In a polar molecule like XY, X's electronegativity is not always greater than Y's, and the shared electrons are not always closer to Y.
Intermolecular Forces
- CO2(s) sublimates easily due to the presence of London forces.
- The strength of intermolecular forces between molecules of a pure sample increases in the order: F2 < Cl2 < Br2 < I2.
Electric Circuits
- When a 4 Ω resistor is connected directly to a 12 V battery, the amount of charge passing a point per second is 3 A.
- The potential difference between two points in a circuit is the amount of work done per coulomb charge moving between the two points.
- The unit of measurement for the rate at which electrical energy is converted is the Watt (W).
This quiz assesses knowledge of molecular structures and polarity in Grade 11 Physical Sciences. It covers topics such as VSEPR and molecular shapes.
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