Do HW; Win Candy

It is time for that favorite fall Halloween tradition.  Monday will be a homework assignment. If in spite of Halloween you complete your HW you will be entered to win the Halloween candy lottery. I will draw a few popsicle sticks in each class and IF you've done your homework you get the pumpkins or snickers or skittles you so desire.

Here is the homework if you want to get started. DO HOMEWORK and WIN CANDY.

Electrons in Atoms

These are the terms for this first part "Electrons in Atoms."  Terms will be on Wednesday's (11/2) quiz. This unit isn't hard if you study bit by bit. It's not a unit you can catch up on the night before. After you've read the flashcards; try a game. How about a round of Space Race?

Choose a Study ModeScatterLearnFlashcards

Study these flash cards | Study chemistry flash cards

Answer sheets

This is last night's homework with answers we used in class today. I know the equations didn't copy. I'm working on it!

Test practice page 1 KEY
Please let me know if these don't work!  I'm trying google documents and I think I like it but it's different. I'll pull up an entire key in class tomorrow.

Atomic Structure and Nuclear Decay TEST

Studying for the test should not be too stressful. We have time to review the test practice page in class before the test! Your classwork shows you know half life problems and nuclear equations pretty well.  If you want more practice on those you can complete the "halfws" for extra credit (see paperclip on 10/24) or just try a problem from the PowerPoint called "Radioactivity and Half Life". (Click on the paperclip on Wed, 10/25).
Need more practice on nuclear equations? Try these multiple choice questions at sciencegeek.net

I'll be adding an oil drop experiment animation to the page later just for the curious.

Mole Day was great!  Thank you for making great cards and sculptures!

TEST EXTRA CREDIT will be converting grams to moles and then atoms like #6 we studied in class today!

Nuclear Power Plant Project

Test grade - Due Oct 12th

This link is to a useful diagram. You could print and work on drawing the diagram later if you needed.

Part two is practicing terms until you can make a good grade on the quizlet test. Your test should have 15 written questions like this one.

Part 3 is a summary and response to an article about nuclear power. My favorite source for science news that is easy to read (about a page and high school reading level) is Science Daily. This link is the nuclear energy news page.
Your article summary and response should each be a paragraph. Please do not write 2 pages. Write a thoughtful paragraph with a main idea. It is okay if my response to the article is different than yours. It should be personal and it is okay to mention emotions as well as intellectual response.

Your handout mentions a graphic organizer option (thinking maps, mind map, charts or whatever works for your article) and you may complete that but make sure it is eye-catching.

The handout also includes a grading rubric you should check out.

Lab Equipment

Choose a Study ModeScatterLearnFlashcards

Study these flash cards | Study chemistry flash cards

Homework Help Gas Collection Problems

Consider the following problem:

A 500 mL sample of oxygen was collected over water at 23°C and 760 torr pressure. What volume will the dry oxygen occupy at 23°C and 760 torr? The vapor pressure of water at 23°C is 21.1 torr.

What are we solving for? V2  

Plan:   1 - Use Dalton's Law to find P02 

                2 - Use Combined Gas Law to solve for V2 

P_TOTAL = P_OXYGEN - P_WATER

P_OXYGEN = 760 torr – 21.1 torr

P_OXYGEN = 738.9 torr 

Given: V₁ = 500 mL          V₂ = ?               (No change in T)

                  P₁ = 738.9 torr         P₂ = 760 torr

V₂ = P₁V₁ T₂       (Temperature can cancel as there is no change.)

                P₂ T₁

   

V₂ = (500 mL) (739 torr) = 486 mL dry O₂

                         (760 torr)