Hi folks,
Today we took some time taking a look at the concepts of causation vs. correlation by looking at some very strange correlations using graphs. We also saw how easy it is to create a graph that gives a false impression of the results. Finally, we finished the density lab we started last week and explored the concept of buoyancy a bit as well.
Homework for next week is to:
Read pages 26-28 in the Conceptual Chemistry book. (Including the part in green.)
Give me 3 examples of a correlation that has no causation. (Ex. Full moon and a busy ER.)
Give me 3 examples of a correlation that does show causation. (Ex. Taking Advil and curing a headache.)
Find the volume, the mass and the density of something at your house.
On page 33 do questions #41 - 44
On page 34 do questions #10, 13 - 19
Answer the following questions.
1. If an object has a mass of 23.4g and a volume of 45ml what is it's density? Will it float in water?
2. If an object has a density of .001g/ml and you have a 90 liter sample of it…what's its mass? (Be sure to convert units here!)
3. If you have 23 kg of gold (yay for you!) how much gold (volume) do you have? (Use the magical internets to look up the density of gold.)
4. Again, with the help of the magical internets, find the metals with the 5 greatest densities. What is the least dense metal?
Wednesday, September 24, 2014
Saturday, September 20, 2014
A great article you may want to take a look at.
Hi folks,
This article does a great job explaining what goes into a can of Coke. From mining the aluminum, to getting it to the store and everything in between. Lots of great "real world" chemistry here. Take a look.
Never Stop Wondering
"Science Jim" Mueller
(919) 338-6142
A Fun Approach to Serious Physics!
Join my Facebook page!
Wednesday, September 17, 2014
Chemistry update 9/16 and homework due 9/23
Hi folks,
Today we spent quite a bit of time going over some basic math skills needed for class this year, such as, exponential notation, significant figures and metric prefixes. We also touched slightly on the concept of density which we will spend more time on next week.
Homework due 9/23
Read pgs. 1 - 16 in the text book.
Answer Review Questions #'s 5 - 21
Also, answer the following questions.
1. How many significant figures in the following numbers:
a. 23401
b. 34.003
c. .0085
d. 34000
2. Convert the following into exponential notation:
a. 23100000
b. 79.01
c. .000000429
3. Convert the following from exponential notation to normal notation:
a. 3.08 x 10^4 (^ means the following # is the exponent)
b. 9.086 x 10^-8
Today we spent quite a bit of time going over some basic math skills needed for class this year, such as, exponential notation, significant figures and metric prefixes. We also touched slightly on the concept of density which we will spend more time on next week.
Homework due 9/23
Read pgs. 1 - 16 in the text book.
Answer Review Questions #'s 5 - 21
Also, answer the following questions.
1. How many significant figures in the following numbers:
a. 23401
b. 34.003
c. .0085
d. 34000
2. Convert the following into exponential notation:
a. 23100000
b. 79.01
c. .000000429
3. Convert the following from exponential notation to normal notation:
a. 3.08 x 10^4 (^ means the following # is the exponent)
b. 9.086 x 10^-8
Wednesday, September 10, 2014
Chemistry update 9/9
Hi everyone,
It's great to get started! Looks like we should have a good group of folks and an excellent class.
Today we took some time to give a brief overview about what science is, what does it mean, and how does it work.
Here's the link to the recording for this week.
Lastly, I've also included the .pdf of the syllabus for this year.
Never Stop Wondering
"Science Jim" Mueller
(919) 338-6142
A Fun Approach to Serious Physics!
Join my Facebook page!
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