this assignment you are going to focus on: Electronegativity, Polar Bonds and Polar Molecules.
science
Description
SCH3U Lesson Assignment 5
In this assignment you are
going to focus on: Electronegativity, Polar Bonds and Polar Molecules.
Total Marks: marks
Instructions:
After completing the lesson
action section of your home page, you are ready to complete your lesson
assignment. Follow these steps.
a) In the textbox given,
explain the strategy that you used to determine your answer.
b) Fill in your answer. The
mark for each question is given at the introduction to the questions to be
completed.
c) When finished answering
all your questions, save your file and upload the file into the appropriate
dropbox.
Part A: (The Concept): True/False (2 marks): Answer
each question given below by answering if the question is true or false. In the textbox given, include your
explanation for your choice. Each
question is worth two marks: one mark for the explanation and one mark for the
correct answer.
1. Polar compounds are
attracted to both positive and negative charges.
|
|
Part A (Understanding
the Concepts): Multiple Choice: (5
marks) Each question is worth different marks according to
the strategy used. If calculations are
required, the mark for the strategy will worth more marks and the final answer
will be worth one mark.
__ __ 1. (three
marks) According to Lewis theory, the number of lone pairs of electrons in
the valence orbitals of a phosphorus atom is
|
|
|
a. |
1 |
d. |
4 |
|
b. |
2 |
e. |
5 |
|
c. |
3 |
|
|
__ __ 2. (two
marks) To explain the bending of a liquid stream by a charged rod, chemists
use the theoretical concept of
|
|
|
a. |
covalent bonds |
d. |
London dispersion forces |
|
b. |
hydrogen bonds |
e. |
polar molecules |
|
c. |
ionic bonds |
|
|
Part C (Putting the
Concepts to Work): Completion ( marks):
Using your
reading, answer the following questions.
Give your answer as well as your strategy for determining your
answer. As part of your answer, give the
page number in the reference material or the website that you used to find the
answer to the question.
1. (two
marks) A bond that is somewhere between an ionic bond and a covalent bond
is called a ____________________ bond.
|
|
2. (eight marks)) For a science fair project, a student wants to design a simple
device for removing certain gases from polluted air. He knows that polar
molecules dissolve well in water, so he bubbles polluted air through a jug of
water to remove unwanted gases. For his project, the student uses air
containing the following gases:
|
1. N2(g) |
5. CH4(g) |
|
2. O2(g) |
6. OCl2(g) |
|
3. HF(g) |
7. C3H8(g) |
|
4. NH3(g) |
8. CH3OCH3(g) |
List
the gases that will dissolve by writing down their corresponding numbers.
