Science 90 - Oct 30

Today we examined some of the common elements in nature and the properties they have.  Elements such as hydrogen, oxygen, carbon, sodium, chlorine.  This was covered on slides 37-42 in the notes powerpoint. Students were then given a periodic table as well as a worksheet labelled worksheet 3.  This will be due tomorrow along with the questions on slide 43.  See you all tomorrow for a very spooky Friday!!!

Physical Science 20 - Oct 30

Today students wrote their stoichiometry quiz.  They then followed it up with some more work with limiting reactants.  The handout that the sub gave today was just for more practice.  It is not due.  Tomorrow we will go over Assignment C25.  We will also look at percent yield tomorrow.

Physics 30 - Oct 30

Today we started looking at the force of friction and how it works.  We learned that friction only depends on the material that the surfaces in contact are made of as well as the normal force that the surface supplies to the object.  We learned about the difference between kinetic friction and static friction as well as how to calculate each value.  This was covered on slides 43-50.  We did a couple of examples as well but didn't quite get to assignment 3.5.  We will get there tomorrow.  On Halloween.  BWUhahahahaha (that sounded creepier in my head)

Science 90 - Oct 29

Today in class we went over the homework from yesterday after I checked it.  We then started to learn about the elements and how they are categorized.  This was covered on slides 33-36.  Tomorrow we will continue with a look at some of the common elements in nature.  There was no assignment with today's lesson.

Physical Science 20 - Oct 29

Today in class we learned some real world stoichiometry.  So far we have learned how to do stoichiometry under ideal situations.  Today we learned what a limiting reactant is.  A limiting reactant is a reactant in a chemical reaction that limits how much product you can make.  Problems that ask you to find the limiting reactant are no different than other stoichiometry problems but you usually have to do stoichiometry twice.  You are given a certain amount of each reactant, and you have to determine how much product will form.  To do that, you must to stoichiometry with each reactant and whichever yields the lower amount of product will be the limiting reactant.

The notes that we took today were on slides 16-24.  Students then had the rest of class to work on Assignment C25.  You will get more time tomorrow to work on this assignment, but you will also be writing a quiz on stoichiometry tomorrow.  This quiz is just going to cover ideal stoichiometry, or Assignment C24.

Physics 30 - Oct 29

Today we started to look at specific types of forces.  We began with an examination of the force of gravity.  This is also called an object's weight, although not to be confused with an object's mass.  The one lesson I wanted students to learn today is that mass and weight do not mean the same thing.  Mass is a measure of the amount of matter an object has whereas weight is the force of gravity on that object.  One is measured in kilograms, the other in newtons.

We learned about the differences between weight and the normal force and also learned what exactly a bathroom scale is measuring.  The concept of apparent weight is really important for students to understand.  This was all covered on slides 36 to 42.  Students were given some time to work on Assignment 3.4 at the end of class, which we will take up tomorrow.

The dates are also set for the first in class assignment in this unit as well as the quiz for Lab 2.1.  The in class assigned, which covers Assignments 3.1 to 3.4, will happen next Tuesday, Nov 4.  The quiz for Lab 2.1 will happen next Monday, Nov 3.

Science 90 - Oct 28

We got settled into our new classroom today and students learned about atomic theory and how it developed over time.  We also learned about the significance of scientific models and the difference between scientific theories and scientific laws.  These notes were covered on slides 23-31 in the chemistry notes powerpoint and then students had a chance to work on the homework given on slide 32.  It is quite a large assignment and will be checked tomorrow.  Make sure you have it done.

Tomorrow we will start looking at the elements and how they are categorized.  After going over the homework of course.

Physical Science 20 - Oct 28

Today students had another period to work on Assignment C24.  We will go over this one tomorrow.  As well, tomorrow we are moving on to look at real stoichiometry.  This will start with an examination of the limiting reactant and then a look at percent yield.  Students wanting to check their answers for Assignment C24 can look in the course notes link.

Reminder to bring a non-perishable item for the food back.  There was a list of desirable food items in student notices today.  Check the school website for the notices and the list.

Physics 30 - Oct 28

Today we started our physics adventure anew in a new classroom.  Just so everyone is aware, we have been moved to room 354 probably for the duration of the semester due to the fact that our old classroom is being renovated.

We also learned about Newton's third law of motion today, or that every force has an equal and opposite reactionary force.  It is a fascinating revelation that has many applications.  We looked at some examples of it in our everyday lives (it is the reason we can walk forward) and then we did one example.  Assignment 3.3 was given at the end of class and we will take it up tomorrow.

Tomorrow we will begin to look at certain types of forces with a lesson on gravity and the normal force.

Science 90 - Oct 20 & Oct 21

Yesterday in science we learned about the difference between a chemical and physical property.  This also led into a discussion on the difference between a physical and chemical change.  This was covered on slides 13-16 in the Chemistry Notes powerpoint.  The students were then given the rest of the class to work on the assignment on slide 17.  We went over that homework today and then did an activity where we made crystals out of a supersaturated solution of borax and water.  Students then answered some questions associated with the activity and I did some demonstrations at the end of class.

Tomorrow we will look at the history of the models of the atom and how atomic theory has changed over time.  We will also look at our crystals and see how they have grown overnight.

Physical Science 20 - Oct 21

With the in class assignment that we did yesterday, that concludes the 2nd outcome in the chemistry unit.  Today we moved onto the 3rd outcome which is stoichiometry.  The powerpoint for this unit is linked in the course notes folder.  Today we learned about molar ratios that we are given in a balanced chemical equation.  We also learned how to use these molar ratios to figure some things out about reactants and products.

I assigned Assignment C23 at the end of class.  We will go over this tomorrow.

Science 90 - Oct 16

Today in class I went over the homework that was given on Wednesday after I checked it and then we watched a video on the states of matter.  Students were given a sheet of questions to answer.  We didn't quite get done the video so we will finish it on Monday.  Have a great weekend everyone.

Physical Science 20 - Oct 16

Today students got a chance to work on Assignment C22 which was a review of everything we have done so far with moles.  It was a review to all the molar conversions we have done.  Students worked on this for the whole class.  The answers are in the course notes link.

On Monday we are going to have a class period to work on an assignment that we serve as a review to the mole as well as reactions.  Students will have to work through some questions where they are given the reactants to a chemical reaction and they will have to predict the products based on their knowledge of the different types of reactions.  As well, students will be given some questions where they have to preform molar conversions similar to what they saw in Assignment C22.  These questions will be due at the end of the class period.  These questions will be assessed and given a numerical grade.  You will not be allowed to redo this assignment.  Make sure you are ready for it.

Physics 30 - Oct 16

We had a shortened period today due to interviews.  However that didn't stop the fun.  We learned about Newton's First Law of Motion today, or the Law of Inertia.   After students took a couple of slides of notes (slides 16-17) we then looked at many different examples of inertia as well as a couple of interesting demonstrations of the first law.  There was no assignment that went along with this lesson.

Reminder of your exam on Monday.  Make sure to bring a pencil, eraser, calculator, ruler and protractor.  For those students in Period 1, if you want to get started early on the exam, I will be at school around 8 am.  For the students in Period 5, if you require more time for the exam, I will remain after school until 4 pm.

Science 90 - Oct 15

Students were given their Reproduction Exams back today to go over.  We then finished the notes that we started yesterday.  This was all covered on slides 2-12 in the Chemistry Notes powerpoint, which can be found in the Science 90 Notes link on the right hand side of the webpage here.  Students spent the rest of class working on the assignment given on slide 12.  Along with questions from the textbook to answer, this also involved defining some the terms that were introduced in this lesson.  This is to be done on a separate handout called Chemistry Key Terms that students received today.  It contains a lot of terms, but students only have to define the ones listed in the homework for today.  This will be checked tomorrow.

Physical Science 20 - Oct 15

Today in class we went over the examples that students copied down yesterday as well as one extra example.  Students then spent the rest of the class working on Assignment C21 as well as finishing their lab reports for Lab C3, both of which are due tomorrow.  The examples that we went over are on slides 39, 40 and 59 of the Mole powerpoint.

Tomorrow we are going to get a chance to work on Assignment C22, which will serve as a review for everything we have done thus far with the mole.

Physics 30 - Oct 15

Welcome to the ides of October everyone!  On this day, we started the new unit on dynamics.  We learned what forces are, general types of forces as well as some of the specific forces that we will be studying.  We also learned what a net force is as well as how to determine the net force.  A new type of diagram was introduced which was the free body diagram.  The FBD for short, will be a vital component to solving problems involving forces.  Assignment 3.1 was assigned and we will take up this assignment on Tuesday.  This was all covered on slides 1-15 on the new powerpoint in the Unit 3 folder.

Tomorrow we will start learning about Newton's Laws of Motion with an examination of the first law of motion.

Science 90 - Oct 14

Today students handed their behaviour self-assessments and we went over the lab safety worksheet.  After that we did a simple activity where we classified different substances based on criteria we defined ourselves.  There was 20 different substances at different stations throughout the classroom and students went from station to station classifying these substances based on their own made criteria.  We then started into the notes on this unit.  I handed out a sent of notes for students to use to follow along with the powerpoint which will be used in this unit.  We will continue with the notes tomorrow.  Make sure to bring your textbooks to class tomorrow.

Physical Science 20 - Oct 14

Today we spent most of the class going over Assignment C20.  We then started looking at solving problems that involved volumes of gases at STP (which means Standard Temperature and Pressure).  This involves using a conversion factor called the molar volume (22.4 L of gas/1 mol  of gas).  Students copied down a couple of examples and then the bell went.  We will solve these problems tomorrow and then work on Assignment C21.

Physics 30 - Oct 14

Today students did the in class assignment for unit 2.  Students who were absent today will make this up tomorrow in class.  Remember that the lab report for Lab 2.1 is due tomorrow.  As well we are starting Unit 3 tomorrow so students might want to print off the notes or the notes handouts.  They are located in the unit 3 folder in the Physics 30 notes link.

Science 90 - Oct 10

Today we started off class by looking at WHMIS and what it is used for.  This ties in with the section on lab safety as well as the first part of the unit on classification.  We watched a video which students used to make notes from.  It is linked below.  We then talked about lab equipment.  Students used the handout they got in class yesterday to make notes from the powerpoint (found here) about different lab equipment and what it is used for.  I then gave a handout on lab safety and WHMIS that students need to complete by Tuesday.  On Tuesday, we will begin looking at how we can classify chemicals.

Students were also given a form that will allow them to assess their learning behaviour skills thus far in the class.  Students are to answer the questions honestly and discuss their assessment with their parents.  Their parents need to sign the form and it needs to come back to class on Tuesday.  Students who were absent on Friday can find the form here.  Please print off, fill in and have your parents sign it.

Physical Science 20 - Oct 10

Students wrote the Mole quiz today to start class.  When they finished that, they then finished their measurements for Lab C3.  Students spent the rest of the class working on Assignment C20, which is due on Tuesday, as well as they lab report for Lab C3.  This report is due on Thursday next week and students need to do a formal lab report for this lab.  The format for this type of report is found here if students are unsure what goes on a formal lab report.

Physics 30 - Oct 10

Today we did lab 2.1, where students examined horizontal projectile motion.  They made a couple of measurements of initial parameters and then did a calculation to find a range and then launched a projectile to see if they could hit their target that they calculated.  Students who were absent can find a set of sample data here with which to do the lab with.  The lab report is due on Wednesday next week.  Reminder of your in class assignment on Tuesday.  Know how to do Assignments 2.1 to 2.4.

Have a great long weekend everyone!!

Science 90 - Oct 9

Today we learned about lab safety and the procedures we will be following to ensure the safety of everyone involved.  There was a handout that students received that we went over in some detail.  Tomorrow we will continue this with a look at WHMIS or Workplace Household Material Information System.  As well we will learn about lab equipment and then start into some classifying of some chemicals.

Physical Science 20 - Oct 9

We didn't have much time today due to the shortened day but we learned how to work with questions that involve molarity.  This was covered on slides 23-28 in the Mole Powerpoint.  We didn't quite get to Assignment C20, but students will have time to work on this tomorrow.  Remember that we have the Mole quiz tomorrow.  Students need to know how to do Assignments C17-C19.

Physical Science 20 - Oct 7 & 8

Yesterday in class I gave the students time to work on Assignments C18 and C19.  These assignments are quite long and involve working with moles, something most students are unfamiliar with.  I felt it was to their advantage to have some more class time to work on this.  We will take these assignments up tomorrow.  Today we started working on Lab C3, which we will finish tomorrow.

We are going to have our first quiz in this outcome on the mole on Friday.  Students should know how to do Assignments C17-C19 in order to study for this quiz.

Physics 30 - Oct 8

Today we did a particularly difficult example with Example 9 - or as I call it the Evel Knievel example.  It was a tricky problem to solve as it involved many substitutions and a tough equation in the end to solve.  However we were able to solve it using some tricks from algebra.  Students then used the rest of the class to work on Assignment 2.4.  We will take this assignment up tomorrow.

Physics 30 - Oct 7

Today in class we finished doing example 7 and 8 and began looking at example 9.  Tomorrow we will finish example 9 and get some time to work on Assignment 2.4.  In the meantime, check out the video links to get some inspiration for example 9.

Science 90 - Oct 6

Today we wrapped up our Reproduction Unit by going over the assignment given on Friday.  I also gave a study guide today to help with organizing your studying going into the exam on Wednesday.
Know the following for the exam

1. The Cell - Plant and Animal
2. Types of Reproduction
• Asexual - methods for plants and animals
• cell division (mitosis)
• Sexual
• Flowering plants
3. Genetics
• genes, traits, characteristics, dominance
• DNA - know the base pairs and how it works!!
4. Human Reproduction
• male/female reproductive systems
• menstrual cycle - know the 4 hormones involved
• pregnancy and conception
• contraception and reproductive technologies

The exam will include a section on matching, fill in the blank, diagrams as well as short answer.  The exam is out of 84 marks.

Physical Science 20 - Oct 3 and Oct 6

On Friday, we started looking at the concept of the mole and what we use it in chemistry for.  We also learned what molar mass is and how to calculate it.  This was covered on slides 1-11 on the powerpoint called The Mole.  It is found in the chemistry folder of the Physical Science 20 notes. Students then spent the rest of the class working on Assignment C17, which was on calculating molar masses for various elements and compounds.

Today we started to learn how to use the mole to convert between masses of substances and number of particles of substances.  This is called molar conversions and was covered on slides 15-19 of the same powerpoint.  Assignments C18 and C19 were given at the end of the class, however you will be given more time tomorrow to work on them.

Physics 30 - Oct 6

Today we started looking at projectile motion.  The key to solving projectile motion is to break the motion up into 2 parts - one horizontal part and one vertical part.  We need to treat each part separately and solve them individually.  The nice thing about this method is it allows us to deal with two 1D problems.  The horizontal motion, because there is no acceleration, doesn't change and therefore is uniform motion.  The vertical motion is influenced by gravity and therefore we are dealing with a constant motion problem.

I did a couple of demonstrations to show this concept.  As well, I discussed a thought experiment called the hunter-monkey demonstration.  I showed a video that demonstrated the experiment.  It is linked right here.  Crazy Hunter-Monkey Demo

We started solving Example 7 but didn't quite finish it.  We will finish it tomorrow as well as examples 8 and hopefully get started on Example 9.

Science 90 - Oct 2 & 3

Today we did Activity A28 on page 92 in the textbook.  This activity allowed us to look at the four hormones that are responsible for the female menstrual cycle.  We learned how these hormones work in tandem to signal different changes in the cycle, including ovulation and menstruation.  Students handed in Activity A28 at the end of the class.  Tomorrow we will learn about pregnancy and about contraception and artificial fertilization technologies.  This will be covered on slides 109-112.  We will conclude the unit with a small assignment on slide 113.  I will be checking this assignment on Monday.

Physical Science 20 - Oct 2

Today students were able to collect the rest of their data for Lab C2.  I also showed students how to make some of the conversions at the end of the lab.  The one where you had to convert the volume into Lake Superiors was a particularly tricky conversion.  Tomorrow we will begin to look at the concept of the mole and what it is.

Physics 30 - Oct 2 & 3

Today we finished looking at example 6 and began working on Assignment 2.3.  Example 6 was another example to show how to work with vector resolution.  This time though we were adding 3 vectors together instead of 2.  Students then spent the rest of the class working on Assignment 2.3, which we will continue with tomorrow.  Many students will be missing tomorrow due to the U of S Open House.  We will start looking at projectile motion on Monday.