We had a quiz on nomenclature of compounds, then worked on review for the unit test. The review and expectations for the unit are found in the document called "review questions" on the unit 1 page of the website.
Mrs. Bergin, our VP will visit the class on Monday for the first day of our new unit. The unit test is on Tuesday.
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We finished the nomenclature section. Today's work is found in the text on p.105. We had a quiz on ionic nomenclature. Tomorrow we will have a quiz that includes all nomenclature. Bring in your option cards please. Unit test next Tuesday.
Homework - p.105 #24 and handout questions. Unit test review - p.154-157 #6-9, 11, 15-24, 28-30 not looking at values for atomic radius, I.E., E.A - just trends, 31, 32, 39 no design, 40ab, 44, 45, 49, 52 Write names and formulas for acids and hydrated ionic compounds. The text reference is p.104, 223. Quiz tomorrow on nomenclature of ionic compounds. See the practice quiz document "practice ion nomen" on the unit 1 page of this site.
Homework: Finish the questions on the handouts provided We reviewed how to name and write formulas for ionic compounds. See p. 95-105 in the text, especially the table on p.98 and the language link in the margin.
Homework: Handout - see "ion nomen questions" document on unit 1 page of this site If you were absent or were working on the experiment rather than listening to the class discussion, consult the document called "hazmat prep" in the unit 1 page of this site for hints on how to make a flow chart and how to decide which type of compound your solid is. The lab report is due on Wednesday. Look at the second page of the document "hazmat assign 2" for corrections to what is required for the lab report.
Your unit 1 test will be on Tuesday, March 2, 2010. Most people completed the experimental portion of the assignment. Each student was given a different sample of a white, crystalline solid. In the role of researchers for the Ministry of the Environment, students used at least three tests to determine whether the solid was polar, non-polar, or ionic. IF YOU WERE NOT IN CLASS TODAY, COME AT LUNCH ON MONDAY TO START WORK ON THE EXPERIMENT. Those who did not get all of their tests done will be able to finish during class on Monday.
Homework: Begin to put together your lab report. Some of the requirements have been revised from the ones on your handout. Please look at the revised copy in the SCH 3U unit 1 page of the website. It is called hazmat assignment 2. We will discuss how to do a flowchart on Monday. There is also extra help available on Monday. You will have an experiment to do tomorrow, in which you will be given a white crystalline solid, and you will have to determine whether it is an ionic, polar, or non-polar compound, by doing at least 3 tests on it. Consider the properties of these compounds to decide which tests to do. You can test for odour, solubility in water and in alcohol, pH, conductivity in solution, and melting point. What will each of these tests tell you about the type of solid you have? You will not be able to do all of these tests in one period, so prioritize them to make sure you have enough information to tell what kind of solid you have.
Read p.292-293 to help you understand the solubility test. Water is a polar solvent and alcohol is a less polar solvent, but is not non-polar. Recall from Grade 10 science that litmus paper is used to test for acidic and basic solution. When you use both red and blue litmus to test a substance, what are the colours they turn for a) acidic b) basic c) neutral solutions? Your unit test will be next Friday, February 26, 2010. Particles can be attracted to each other by forces that cause them to clump together and become a solid. Ionic attraction is a strong force so ionic compounds are solids at room temperature. Molecular compounds have strong covalent bonds inside them, but they are attracted to other molecules by weaker intermolecular forces. Non-polar molecules are attracted by the weakest intermolecular forces, so they are often gases at room temperature. Polar molecules are attracted by the positive and negative ends of other polar molecules, so these are often liquids and solids at room temperature. Text reference is p.90-93.
Homework: Read p.67, 78-79, 82-83, 93 and summarize the properties of ionic and molecular (covalent) compounds. Answer p.74 #6, p.84 #6, p.94 #6. Download the anticipation guide for your new assignment from the unit 1 page of the grade 11 course and follow the instructions on it. You should be able to use electronegativities and shape to predict whether a molecule is polar or non-polar. For help, see p.88-91 in your text. There is extra help at lunch tomorrow.
Homework: p.94 #1-4, 7 We had a short period due to the assembly. We completed the quiz on periodic trends and began a molecular model-building activity. If you were absent today, please be ready to write your quiz on Tuesday, and download the model-building activity from the unit 1 page of the website, in order to complete the Lewis diagrams for the models you will be building. There is no other homework. Have a great long weekend.
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