Today we’ll be using our Homework from last night (Molar Mass Worksheet) to determine the Percent Composition of different atoms in those molecules. It’s really easy see the example below to help you with today’s assignment. The Answer key can be found on the Docs page. Use this as a tool to check work, not to copy.
| Molar Mass: CaCl2 | %Composition: CaCl2 |
|---|---|
| 1 CaCl2 Molecule: 1 Ca = 1 x 40.1 = 40.1 2 Cl2 = 2 x 35.5 = 71.0 111.1g/mole |
%Ca= (40.1/111.1) x 100 = 36.1%Ca %Cl= (71.0/111.1) x 100 = 63.9%Cl |
emical properties and changes. Today is an independent learning day because I will be out for part of the next two days as I am involved with a seminar here on campus. Therefore I’m putting the information in your hands with voicethread. The annotated notes (yes that means I’ll be talking) are available on the notes page. AND, due to popular demand, I’ve gone ahead and added the key questions to the PDF for you. I know, I know, I’m too kind. When you’re finished with the notes, I’d like you to follow these directions:
been introduced to the periodic table and the elements listed on it. Today, we’ll be diving a bit deeper into the periodic table than you have in the past. As a part of your notes, you’ll need to label and color a blank periodic table. You can do this on Notability or on a hard copy with colored pencils or markers. If you’re choosing the latter, make sure you bring these utensils to class today.
