VIDEO: Conservation of Mass Notes

Students: here, in this VIDEO, are the notes from Section 1.3 of your text, on 'Conservation of Mass'.  

I've also provided important information here about how to interpret chemical formulas and balance equations.

VIDEO: BALANCING EQUATIONS

In this VIDEO, Mr. Hatfield provides equations for reactions involving both ionic compounds (like the SrCO3 in the 'Conservation of Mass' Lab) and covalent compounds (like the hydrocarbons in the 'Conversion of Paraffin' Lab).

Then, step by step, Mr. Hatfield balances all of these equations.  

Balancing equations is an iterative procedure, sometimes called 'trial and error', and students have to practice the skill of unpacking and balancing equations many times before it will become routine:

 

VIDEO: CONSERVATION OF MASS LAB ACTIVITY

Students:  here is a VIDEO, which demonstrates the steps in the same lab activity shown in class on Sept. 23-24.   The expectation is that you will use the data discovered in the video to complete the Lab Activity document, which again was shared in class on Sept. 23-24.

In order to complete the Lab Activity document, you must download it to Microsoft Teams, then complete it ON YOUR OWN COMPUTER using the version of Microsoft Word which should be installed ON YOUR OWN COMPUTER.  You should save a copy of your document in a folder on the desktop of YOUR COMPUTER.

The completed document should be submitted attached to an email to your instructor:

Scott.Hatfield@fresnounified.org

If, after five weeks in this course, you are still unclear on HOW to send an email with an attached document, your instructor refers you to THIS POST on the class blog.

VIDEO: 'DRAWING ATOMS' (MR. HATFIELD'S WAY)

In this VIDEO, Mr. Hatfield demonstrates his flat, two-dimensional, cartoony and unrealistic way to draw atoms. But that's not a bad thing.

Atoms don't 'look like' anything in the real world, so every attempt to draw them is going to be unrealistic in some sense: they're smaller than visibile light, after all!

But, Mr. Hatfield's way of drawing atoms does allow you to distinguish at a glance between the internal structure of a standard neutral atom, an ion or an isotope---and that can make all the difference in understanding the way that different substances (elements and compounds) actually behave.

VIDEO: MODELING CALCULATIONS FOR THE 'COMBUSTION OF PARRAFIN' ACTIVITY

This VIDEO shows students how to do the calculations with the lab activity 'Combustion of Paraffin', by demonstrating similar calculations for the combustion of propane.

VIDEO: EXPERIMENTAL DESIGN AND SIGNIFICANT FIGURES

Students:  here is a new VIDEO that introduces a concept that you must ALWAYS employ when performing calculations in Chemistry. 

Well-designed experiments take place in controlled conditions that account for variables, and which express their results in significant figures in order to handle the inevitable limitations to measurement that will occur.

When we do math in this course, we are NOT engaged in an abstract exercise in which the answer is simply a number for someone unknown variable, 'x'.  Instead, we are attempting to measure real phenomena and make predictions about what these phenomena will produce in the real world.

In that real world, there are limits to the ACCURACY and the PRECISION of our measurements.  Students must understand the difference between the related but distinct concepts!   Students must understand that the limits require us to not express our results with an UNREALISTIC level of precision, that was NOT actually observed!

'QUIZIZZ' : A RESOURCE FOR QUIZZES, HOMEWORK AND TESTS

Students:  I have a new resource which is going to make a lot of our asynchronous work (outside of direct instruction) more convenient!

That resource is QUIZIZZ, which can be assessed through the Clever 'app' .   You need to go to Clever.com, logging in with your FUSD student account (this should be automatic after you've done it once!).

In THIS VIDEO, I will walk students through steps needed to first obtain a Quizizz account through Clever.com, then how to register their student account with their class within Quizizz. Being able to access this resource will be vital to student's success in the course.

VIDEO: SCIENTIFIC METHOD AND CHEMISTRY

Students, here is the first of many videos that will summarize material from the lecture portion of the course.   You can watch it as many times as you like:

   There will be an Assignment, eventually, based on your ability to complete the notes from watching the Video. 

Yes, it is long, over 30 minutes!  But what did you expect?  This is CHEMISTRY, and we have a LOT to tell you, all the time!

Made available outside of instructional time for my students.   Copyright (C) 2020 by Scott Hatfield.  All Rights Reserved.