Formulas:
F = ma
a = Δv/Δt
v = Δd/Δt
s = positive movement
Units:
F = Newton (1 N = 1 kgxm/s2)
a = m/s2
v = m/s
S = forward movement… no t
Tomorrow we’ll do more labs using these as well as build on our knowledge (no homework!).
Here is the calendar of due dates for the Journal of Middle School Science we are working on for the next two weeks.
You can view the calendar by month (default), week or Agenda (handy).
I’ll be adding all future assignments to this calendar as well. So, you can add this calendar to your own SDS calendar and stay up to date (see me if you need help on this). The calendar will always be available in the “Cal” tab up in the menu bar at the top.
Let me know if you need any help figuring this out as it will be really helpful for you since we all have our SDS Google accounts now!
Here are the five review podcasts to help you prepare for our TEST on chapter 7 this Wednesday…
Chapter 7 Wrap-Up:
Listen!
Let me know if you have any questions!
Here is the note sheet covering section 7.4 from today’s class (click).
1. What is a hydrogen ion?
2. What is the key to the reaction of acids?
3. Please give another definition of acids based on what we’ve learned about hydrogen ions.
4. What are many bases made from?
5. Describe the hydroxide ion
6. Please give another definition of bases based on what we’ve learned about hydroxide ions.
7. To what does the strength of an acid or base refer?
8. How does a strong acid differ from a weak acid?
9. What are some examples of strong acids?
10. What is an example of a strong base?
11. What is the pH scale?
12. What does a low and high pH tell you?
13. What is a “salt”?
14. What happens in a neutralization reaction?
More than a couple of you have asked where you can listen to the They Might Be Giants songs we’ve listened to in class (other than buying them on iTunes or Amazon).
Here’s a link to the Last.fm page for the album:
Here Comes Science – They Might Be Giants – Listen free and discover music at Last.fm.
Enjoy!
Your up-to-date grades for the 2nd quarter are posted over on http://www.mygradebook.com, so head over and see how you currently stand in the class.
You may also want to look at the “Future Assignments” section as there may be a surprise very soon (as in tomorrow)…
Here is the note sheet we completed in class today on section 7.2 (click).
Remember, your homework is Section 7.2 Section Assessment p. 235 #1-3!
1. What is a dilute solution? Please give an example.
2. How does a concentrated solution differ from a dilute solution?
3. How can you change the concentration of a solution?
4. When you make juice from concentrate by adding water, are you making a dilute or concentrated solution?
5. How do you measure the concentration of a solution?
6. Why can you only add so much sugar to sweet tea?
7. What is a saturated solution?
8. What does the solubility of a substance tell you?
9. What factors affect the solubility of a substance?
10. How does pressure affect the solubility of gases?
11. How do solvents affect how well a solute dissolves in liquids?
12. How are the solubility of solids affected by temperature?
13. What is a supersaturated solution?
14. Is NaCl or baking soda more soluble in water?
15. As temperature increases, what happens to the solubility of a gas?
See you tomorrow!
I can’t believe we’re already half-way done with October!
Anyway, here is the note sheet on Chemical Equations that we completed in class:
Remember to do questions 4 and 5 on page 201 for Homework if you didn’t complete them in class.
There’s a strong possibility you’ll have a quick check-up quiz on Monday which will be 5-10 chemical equations for you to balance, so study up!
*There are many good chemical equation tutorial sites on the web if you do a quick Google search. I’d suggest looking at this one if you want to try some extra problems or need extra help.*
I’ll be home this weekend, so feel free to email, IM, call, Skype, Twitter, Facebook, smoke signal, etc me if you have any questions!
Today we continued our studies of Antoine Lavoisier and his importance to chemistry (and many other areas).
Here is a link to the reading that we covered in class on the life of Lavoisier.
Additionally, here’s a link to the Wikipedia article we discussed which has a couple of fantastic pictures relating to Mr. Lavoisier and his experiments.
Remember, your homework is due tomorrow. In case you forgot…
Your Homework:
Find 10 important points about Lavoisier from our conversation in class or from your own readings of their linked texts.Write/type/blog those points and your responses to them in complete sentences.
(Your points should not just regurgitate what others have said but include your own insights).
See you tomorrow!
Today in class we took the Test 1 Review to help prepare for this quarter’s only major test (worth 12 points).
Here is the link to the Test 1 Review.
Use the review to help you study and prepare your notes for Test 1 (Thurs-Fri this week) since many of the questions will strongly resemble these questions and the topics they cover. The formatting will also be the same.
We’ll go over the answers in class.
