Homework for 10-29 and 10-30

Hi everyone!

 

Today we did two things.

 

First, we went over lesson 17 - this included reading different parts of the periodic table, learning how to calculate protons, neutrons, and electrons (including isotopes and ions), and then calculating average atomic mass. Make sure you get the examples from this section, as well as getting all the blanks filled in.

 

Second, we did the flame test lab. You have to pick up a copy of this if you weren't here, because it isn't in your book. This took about half the period, and involved sticking wooden sticks into a small sample of salt, then putting it in a bunsen burner flame, and noticing the color that the flame becomes with the salt burining. This occurs because of salt ions having their electrons excited and when they return to their ground state, they release that energy as a form of light.

 

Homework:

 

For Monday/Wednesday:

- Penny Lab letter reports are due. These are going on the second quarter grades.

- Worksheets from lessons 14, 15, and 17. 14 and 15 were assigned before, and 17 was assigned today - there are 5 of them. Make sure to have all of these completed as we will be going over all of them next class, including giving points for doing them, and reviewing for the test.

 

For Thursday/Friday:

- Flame test lab reports are due - these are just answering questions on the bottom of the back of the lab.

- Test!! - The test is on Unit 3, lessons 14-17. There is a study guide on page 109.

 

Thanks - if you have any questions, feel free to email me or see me in school!

 

Mr. Rinke