Chemistry 10-29-09 Chapter 3 Test Review
CHEMISTRY: Great review today! Here’s the vodcast of the review, if there is something you have a question about. Make sure you check out the chapter 3 study suggestion sheet on Edline, and practice practice, practice! I believe in you – you can do this! And I’ll be praying for you!!
October 29th, 2009 at 7:50 PM
Ms. Skinner, im having trouble w/ the problems in the homework. is there going to be a help session before the next test that i can come to?
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Ms. Skinner Reply:
October 29th, 2009 at 9:53 PM
Drew – yes, we’ll have a help session for the chapter 4 problems. To help for now, make sure you know two things – 1) the formulas and how to re-arrange them, and 2) the symbols and units for wavelength, frequency, speed, energy, and Planck’s constant. You know these really well and you’ll be more than half way there!
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October 29th, 2009 at 8:03 PM
yes, drew. it was today at 7:15 a.m. hope you made it!
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October 29th, 2009 at 8:11 PM
who did the cathode ray tube experiment?
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October 29th, 2009 at 8:13 PM
Madison- it was J.J. Thompson
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October 29th, 2009 at 10:14 PM
who was it that did the oil drop experiment?
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October 30th, 2009 at 6:56 AM
robert millican did the oil drop eperiment, brice
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October 30th, 2009 at 8:38 AM
Mrs. Skinner, are there any other big theories on atoms that we haven’t gone over over? If so, are there alot?
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October 30th, 2009 at 8:39 AM
Sry, I meant- gone over yet
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October 30th, 2009 at 12:13 PM
was it democatis or aristotle that was the first scientist to deal with atoms?
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Lindsey Barnes C1 Reply:
October 30th, 2009 at 4:44 PM
Democritus was the one who came up with the idea of the atom. Aristotle believed the earth was made up of only four things: Earth, Wind, Fire, and Air maybe?
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October 30th, 2009 at 4:43 PM
Do we really have to ask or answer a question? What if all I want to do is say I think those videos helped me?
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October 30th, 2009 at 7:10 PM
Who did the gold foil experiment?
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caitlin holland Reply:
October 30th, 2009 at 11:22 PM
Rutherford. i think.
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October 30th, 2009 at 7:42 PM
What is Avagadro’s number?
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Morgan Cox C6 Reply:
October 30th, 2009 at 8:32 PM
6.022 x 10-23
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October 30th, 2009 at 9:05 PM
who did the cathode ray experiment?
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megan filka c1 Reply:
November 3rd, 2009 at 9:51 AM
jj thomson
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October 30th, 2009 at 9:06 PM
in the mols to atoms problems. You can’t go from atoms to mass right…?
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October 30th, 2009 at 10:12 PM
isn’t science in the news due monday? and what is it over?
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October 31st, 2009 at 2:26 PM
Hello! I have forgotten to do a web post two weeks in a row. wow. how much are web posts worth?
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October 31st, 2009 at 4:37 PM
in our projects do we have to label every proton and neutron on our carbon models?
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Ms. Skinner Reply:
October 31st, 2009 at 6:59 PM
Jessica – not every one, just a representative proton and neutron.
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November 2nd, 2009 at 5:34 PM
Ok, quarks? Really? Why would anyone name something scientifical that?
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wesley pena hc-4 Reply:
November 3rd, 2009 at 8:41 PM
i guess they just ran out of all the boring really long names that are hard to spell
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November 2nd, 2009 at 5:46 PM
on our project do the little balls have to be put together or around another ball because if you put them all together you cannot see them all.
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wesley pena hc-4 Reply:
November 2nd, 2009 at 8:42 PM
they need to be all in one little ball together. it’s ok if you can’t see them all, but they all have to be in a ball. not around anything else.
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November 3rd, 2009 at 10:59 AM
On the project when we put together the particles does it have to be an exact round ball?????
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November 3rd, 2009 at 11:03 AM
on the project when we put together the particles does the over all shpae to be a perfect ball shape>????
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Katie Ligon C1 Reply:
November 3rd, 2009 at 11:03 AM
I HOPE THIS WORKS
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Ms. Skinner Reply:
November 3rd, 2009 at 7:20 PM
Katie – it worked all three times!
What is the shape of nuclei in real life? Or what do we think it is? Spherical maybe?
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jessica k Reply:
November 3rd, 2009 at 11:04 AM
katie, mostly all the patricles should be one average size. try to get them as close together in size as possible
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November 3rd, 2009 at 7:42 PM
who was the first person to discover an atom?
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Drew Fondren C6 Reply:
November 4th, 2009 at 12:25 PM
The idea of the atom has been around since greek times. Democritus was the first person to propose everything was made of atoms.
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November 4th, 2009 at 5:46 PM
what are some examples of short and long waves? since their weren’t any in the video?
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Tori W C2 Reply:
November 4th, 2009 at 7:59 PM
Michaela, i would suggest looking in the book, but i am looking right now and i don’t seem to be finding any but i’m sure ms. skinner will tell us tomorrow.
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November 4th, 2009 at 9:17 PM
When will we find out what we made on our isotope projects?
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November 4th, 2009 at 10:09 PM
Bree- Democritus was the first person to discover the atom.
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November 5th, 2009 at 11:22 AM
when will our test be
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November 5th, 2009 at 11:23 AM
so when will the projects be graded
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November 7th, 2009 at 1:17 AM
does anyone know when the next test will be?
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