Thursday, January 31, 2019

Chemistry Class tomorrow

Hi folks,

I hope folks are doing OK with the stoichiometry stuff we introduced last week.  It's pretty confusing so we will spend some more time tomorrow doing some problems together.  Just to let you know, there will be a quiz tomorrow but it won't include the problems on this week's homework.  However, it will be asking you to convert measurements to moles and moles to measurements (the stuff you did for homework the week before this) so be sure you get that down pat.

Here is a bunch of worksheets with answers for you to practice.  This isn't homework, just extra problems if you want them.

Best,

Jim Mueller
(919) 907-3217









Saturday, January 26, 2019

1/25 Chemistry update and homework due Feb 1

Hi folks,

Today we took our wonderful new found skill of using the mole as a tool and began to use it as it was meant to be used, in chemical equations.  

For homework this week, you guessed it,  practice this wonderful new skill.  Please do the enclosed .pdf.  Full explanations of the solutions are included at the bottom.   This author solves the problem using unit conversion which is fine to use if you wish.  Personally, I find the "Unknown over Known" ratio to be easier but whichever works for you is fine.

Good luck folks.  Remember, feel free to rewatch the recording if you'd like to see the walk through again.


Best,

Jim Mueller
(919) 907-3217






1/25 HS Chemistry Recording - Stoichiometry

https://youtu.be/WIGH67QWNjY










Saturday, January 19, 2019

1/18 Chemistry update and homework due 1/25

Hi folks,

Today we spent a lot of time learning how to work with the concept of the mole. We did several conversions from moles, to mass, to liters and to particles and back again. The mole is just amazing! :)

For homework this week I've got another wonderful worksheet filled with endless problems. You can do them while you're watching the eclipse! The answers are included and they are the first page so try no to peek as you scroll down the document. :)

By the way, for number 2, just do a to e. Feel free to do the rest if you wish.