Rourke
9/17/2012 05:02:25 am
+0.5 points extra credit for the first student to post a comment
Bruce Proctor
9/17/2012 05:09:42 am
Nice video, like the idea and is going to make the class alot easier
Christina Szydlowski
9/17/2012 05:27:20 am
I like that we can watch the lesson and be able to work with you and our friends the next day if we have questions.
Andrew Ruczynski
9/17/2012 05:27:33 am
Can the amount of electrons change without affecting the amount of protons or due both of them have to change?
Laurel Payne
9/17/2012 08:13:23 am
The electrons can change, it just makes the element an anion or a cation.
Riley Yaxley
9/24/2012 07:40:21 am
An anion is any negatively charged atom or group of atoms while a cation is any positively atom or group of atoms.
Davanna White
9/17/2012 05:43:45 am
Can you change the amount of neutrons and the number of electrons, or does it have to be just one of the two?
Christina Szydlowski
9/23/2012 11:42:55 pm
Both can change, but you have to watch out because the charge also changes.
Kayla Diederich
9/17/2012 06:30:26 am
If you have 11 protons and 12 electrons, can you find the number of neutrons from this?
Rourke
9/17/2012 09:13:01 am
Not without also knowing the mass number
Megan Bishop
9/17/2012 06:59:27 am
I did not know that there was so many different terms such as anion, cation, ion, etc. to describe when an atoms loses or gains subatomic particles.
Katie Townsend
9/17/2012 07:26:02 am
I did not realize this was actually Mr. Rourke until about a minute in! Silly me :) I like this way of learning. I get to write good notes, pause, and rewind. However, isn't there a number on the bottom of the element? Is there a name for when the neutrons go above or below the amount of protons?
Rourke
9/17/2012 09:14:01 am
Just don't make fun of me voice, Ms Townsned!
Abbey Johnson
9/23/2012 11:42:46 pm
the number on the bottom of the element is the mass #.
Lee Muglia
9/17/2012 07:47:18 am
I liked the video, and I liked how I was able to rewind to rehear a part if I missed it. I understood the content well too. I thought it was going to be totally different, but it wasn't.
Allison Schweiger
9/23/2012 11:33:49 pm
If you subtracted neutrons, it would not change the charge of the atom to negative or positive; it would only change the mass number.
Madison Job
9/17/2012 07:57:30 am
The video was easy to follow, and understand.
Laurel Payne
9/17/2012 08:12:09 am
Elements gain or lose electrons through nuclear fission or fusion. In fission, particles hit the protons to break them apart, while fusion heats them up to meld them together.
Amanda Fulghum
9/17/2012 07:59:16 am
I understood the video but, if you had say 12 electrons and 11 protons wouldn't mess up the atom overall?
Abbey Johnson
9/23/2012 11:44:40 pm
It would only change the atom's charge. It would make it have a negative charge because there are more electrons than protons.
Ben Evans
9/17/2012 08:10:33 am
Very interesting. But what would happen if it lost an electron and gained two protons or vice versa. How would this affect the atom?
Jake Schmidt
9/23/2012 11:32:05 pm
It would change the charge Ben
Bailey Ernst
9/24/2012 03:32:48 am
Just to make it more clear, if an atom lost, 2 electrons, and gained 3, the charge will change, depending on if the charge was more negative or positive. Let's say that an atom had 4 electrons and 4 protons. This atom loses 3 electrons. The charge would then be +3.
Riley Yaxley
9/24/2012 07:21:58 am
To make things clearer. If an atom lost two an electron and gained two protons the atom's negative charge would decrease and its positive charge would increase.
zeke fetty
9/17/2012 08:34:01 am
one question i have is does anything happen to the atom if it is an anion or a cation other than the charge being negative or positive?
Davanna White
9/24/2012 03:18:56 am
Not that we've learned thus far. Perhaps, depending on the elements, but we haven't exactly gotten that far.
Brendan Mantey
9/24/2012 03:22:25 am
No that is the only difference
Krista Wylin
9/17/2012 08:45:06 am
I like the videos. It's a slower pace than in class so I can absorb the info better. It's also nice to know exactly where these are so if I ever need to come back to it I will know where to look. NA dI like the idea of working with friends in class instead of just sitting there listening.
Bailey Ernst
9/17/2012 09:00:48 am
I find it very interesting that if you have 11 protons (sodium), and one gets knocked into that atom, it automatically becomes magnesium. It's sort of like BOOM! I am now magnesium! I find the videos much more helpful than a class lecture. I'm a visual learner, so Rourke's voice and the display helps the learning process with me.
Bailey Ernst
9/17/2012 09:09:15 am
Does sodium, if it were to obtain one more proton, actually just flat out automatically become magnesium?
Rourke
9/17/2012 09:15:41 am
Yup...
Krista Wylin
9/24/2012 03:25:30 am
No matter what if the element loses or gains just one proton it becomes a different element.
Jake Schmidt
9/17/2012 09:27:19 am
Why when you take away an electron it becomes Na ^+1? and vice versea for the electrons going down
Ben Evans
9/23/2012 11:42:22 pm
Because the charge is changing either positively or negatively depending if u gain or lose electrons.
Allison Schweiger
9/23/2012 11:43:40 pm
Taking away an electron gives the atom a +1 charge because the number of protons is greater than electrons, giving the atom an overall positive charge and vise versa.
Kayla Diederich
9/24/2012 03:30:57 am
Well electrons have a negative charge. So, if a negative charge is lost then the number would increase and in some cases become positive depending on how many electrons were lost. Also, if you gain an electron then a negative charge is being gained.
Carly Zebelian
9/17/2012 09:36:01 am
I really like this because we can learn it on our own without other people asking questions or answering things before you can understand it. It must be pretty awkward though lecturing a class with no students...
Chris Smith
9/17/2012 10:26:06 am
So if I'm understanding this correctly, as soon as the number of electrons or neutrons changes, it beceomes an anion or cation?
Brendan Mantey
9/24/2012 03:24:42 am
just when it loses or gains an electron. if it gains an electron it's an cation and if it loses an elctron its an anion
Carly Zebelian
9/24/2012 03:26:04 am
yes
BRENDAN MANTEY
9/17/2012 10:35:09 am
Is it possible to have 2 more or 2 less electrons?
Krista Wylin
9/24/2012 03:27:57 am
Yes, an element can gain or lose 2 electrons. It will still become a different element when that happens. Instead of going through one change it goes through 2.
Rachel Kosek
9/24/2012 03:28:37 am
Yes, it would just be written like, for example , He2+
Krista Wylin
9/24/2012 03:31:17 am
My bad I meant to say protons, not electrons. Oops.
David Kasperski
9/17/2012 10:41:44 am
Can both of the electrons and neutrons both change and if they both can how does this change the actual element?
Lee Muglia
9/24/2012 03:23:45 am
Both electrons and neutrons can change. When the number of electrons change, they are called ions, and when neutrons change, they are called an isotope. When the number of electrons change, they make the element have a plus one charge or a minus one charge, depending on the element loses or gains electrons. When the number of neutrons change, it changes the mass of the eelment because the equation to find the mass of an element is : the atomic number + the number of neutrons. When the number of electrons and neutrons change, it does not change the type of element because the number of protons remains constant, and the number of protons is the atomic number. 9/17/2012 11:22:42 am
What if there are two more electrons than protons or vice versa?
Bailey Ernst
9/24/2012 03:20:58 am
For example, if there are 9 electrons and then 7 protons, it means that the charge would be negative. So, the charge would be -2. This is because the negative charge over powers the positive. It would be the same if there were 9 protons and then 7 electrons. The charge woud be 2.
Bailey Ernst
9/24/2012 03:22:12 am
The charge would be +2.
Madison Job
9/24/2012 03:28:23 am
if there are two more electrons than protons then that means the charge becomes negative, if there are two more protons than electrons, the charge becomes positive.
Doug Loper
9/17/2012 11:57:00 am
Do the electrons in ions and isotopes act the same as in atoms?
Chris Smith
9/24/2012 03:27:28 am
Yes, from research, it would appear that they do.
Madison Job
9/24/2012 03:31:56 am
the number of electrons and protons are not equal in an ion, and in an isotope, the protons are not equal to the amount of neutrons.
Andrew Ruczynski
9/24/2012 03:32:26 am
Ions and Isotopes are atoms so they would act the same. It is just a different way to catergorize them.
Kayla Diederich
9/24/2012 03:33:14 am
Yes they would other than the fact that ions contain a different number of electrons.
Hunter Barjak
9/17/2012 12:35:33 pm
for some reason i cannot get the sound to work for either of the videos. im going to try and watch them at break before class tomorrow, and later try and figure out why the sound isnt working on my computer for the rest of the videos
Abbey Johnson
9/17/2012 03:34:24 pm
The sound on the videos didn't work on my computers. At first I thought it was just my computer, but I tried my mom's and the sound didn't work on it either. I tried for a long time to fix the sound, but even my sister couldn't get it working. I gathered what I could with only the notes. Neither of the videos worked. Sorry I posted so late. I've been wrestling with the videos for a long time.
Allison Schweiger
9/17/2012 07:39:26 pm
i find it really interesting that adding or subtracting one electron from the element will change the element completely.
Sara Campbell
9/17/2012 11:02:38 pm
This is really cool... is there any other purpose of the atomic number than to identify or to show to number of protons?
Davanna White
9/24/2012 03:23:44 am
The atomic number of an atom is used to uniquely identify a chemical element. It is also used as part of the equation to calculate atomic mass.
Brendan Mantey
9/24/2012 03:30:15 am
Why should we care?
Bruce Proctor
9/24/2012 03:32:54 am
Because it allows us to to gather further knowledge on the atomic structure of a certain substance
Bruce Proctor
9/24/2012 03:33:45 am
*substances
Riley Yaxley
9/24/2012 07:24:54 am
It matters because the atoms amount of electrons and protons affects what element it is. Therefore, losing a proton causes an element to change completely. Leave a Reply. | ArchivesSeptember 2013 Categories |
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