Physical Science 20 - Sept 28

Today, we did another example related to molar conversions.  We did an example where we found the mass of a certain number of atoms of the substance.  This example involved 2 steps, first converting our given information into moles and then converting from moles into the required.  Students then had a chance to work on Assignment C18. We will take this up tomorrow.  We will also do our first lab tomorrow on the mole.

Physics 30 - Sept 28

Today students began class by writing the quiz for Lab 1.1.  This took the majority of class.  Afterwards, students learned about Newton's Second Law of Motion.  We went through a couple of examples that outline the relationships that exist between mass, force and acceleration.  This was covered on slides 22-31 in the Unit 2 Notes powerpoint. We didn't quite finish the notes today.  We will finish them tomorrow and then get a chance to work on Assignment 2.2.

Physics 30 - Sept 27

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.  Students can work on Assignment 2.1.  

Physical Science 20 - Sept 27

Today in class we began to look at how to convert information using the idea of the mole.  This involved using the molar mass to convert from the mass of a substance to moles of the substance and visa versa.  As well, we can use Avogadro's number to convert from the number of particles of a substance to the moles of the substance and visa versa.  We just did a couple of examples (slides 16 - 18 in the powerpoint called The Mole) outlining the process.  Students then had a chance to work on Assignment C19.  We will go over this tomorrow and then work on Assignment C18.

Physical Science 20 - Sept 26

Today students began class by reviewing the conversion technique we will be using in class.  We worked on a metric conversion assignment.  After about 20 minutes on this assignment, we moved on to learn the concept of the mole.  I introduced this concept to the students and then we learned how to calculate a substances molar mass.  At the end of class I assigned Assignment C17 and told the students to work on every second letter.  Tomorrow we will learn how to do molar conversions.  There is a new powerpoint that we are using.  It is called Chemical Quantities and today we did slides 1-12.  It is found in the Notes folder of the chemistry link in the physical science 20 course notes folder.

Physical Science 20 - Sept 22

Today students wrote their nomenclature quizzes. Afterwards, we then started to review math skills important for science.  This included a discussion about significant figures and scientific notation.  Tomorrow we will finish this will a discussion on unit conversion.  This is all located in a new powerpoint called Math Notes located in the Chemistry folder of the course notes link.

Physics 30 - Sept 22

Students had a work period today in class to prepare for the in class assignment on Monday.  Students mostly worked on Assignment 1.7 but need to know all assignments in this unit to be ready for the assignment.  Good luck!!!