Im studying chemistry right now and i am having trouble determining what the chemical formulas are to ionic and covalent compounds. Here is a sample question: Calcium (Ca) combines with chlorine (Cl) to form calcium chloride, an ionic compound. Calcium has two electrons in its outer energy level and chlorine has seven electrons in its outer energy level. Determine the formula for calcium chloride and EXPLAIN your answer.
I researched calcium chloride and found the formula is CaCl2, but on a test i wont be able to research the answer. Are there easy ways to dechemical formula ionic compoundtermining chemical formulas?
Thank you for helping,
Ryan C.
In ionic compounds, you have the metals (on the left side of the periodic table) who tend to pass off electrons, and you have the non-metals (on the right side) who have "gaps" in their electron shells and tend to accept electrons.
In the case of CaCl2:
Chlorine has 7 electrons in its outer shell. A full shell for would require 8 electrons, so it is "looking" for 1 extra electron to fill its outer shell.
Calcium has 2 electrons in its outer shell. It would like to give those extra two achemical formula ionic compoundway, so it's looking for 2 takers.
Soo... Chlorine (with the one gap) calls up another Chlorine (also with the one gap), and now you have a total of two gaps. Two extra electrons from Calcium and two gaps from the two Chlorine make a good fit, and everyone is happy.
I can give more examples if you wish...
Li has 1 electron in its outer shell, O has 6 electrons in its outer shell (looking for 2 to fill up)
2 Li together can offer the two electrons O is looking for. this makes Li2O.
Wednesday, January 11, 2012
can metal conduct electricityWhat makes a metal conduct electricity?
copper and other metals can be extremely good at conducting electricity. but some other metals resist it. why do some metals conduct better than others? what is it about metal that makes conductivity possible? and water isn't a metal and it conducts it really well. what makes a substance conduct electricity or resist it or insulates it?
all metals are capable of conducting electricity - they conduct because the atoms do not hold their electrons tightly when in large groups so the electrons (negatively charged subatomic particles) are free to move (throughout the atoms). Moving charge = electricity! The lcan metal conduct electricityevel of conductance is based upon their "willingness" to allow their electrons to move (sea of mobile electrons)
Water (pure) does not conduct electricity - there is no freely moving charge (contains no charged particles). When ionic substances (salts) dissolve in water they dissociate into seperatre ions which are free to move about and therefore you have moving charge.
A human has salts on their skin. When a human is in water it is like having dissolved salts - now that water will conduct electricity. Be careful of newly found knowledge - It can be dangerous sometimes! can metal conduct electricity
For the purpose of elecronics and electrical engineering, materials are classified according to their electrical resistance, which describes how readily they allow electric current to pass when a voltage is applied. Apart from conductors, materials are classed as insulators (very poor conductors), semi-conductors (basically, materials whose ability to conduct electricity can be controlled), and superconductors which (below a critical e, usually a very low one) offer no significant electrical resistance, allowing circular currents, once established, to flow indefinitely.
all metals are capable of conducting electricity - they conduct because the atoms do not hold their electrons tightly when in large groups so the electrons (negatively charged subatomic particles) are free to move (throughout the atoms). Moving charge = electricity! The lcan metal conduct electricityevel of conductance is based upon their "willingness" to allow their electrons to move (sea of mobile electrons)
Water (pure) does not conduct electricity - there is no freely moving charge (contains no charged particles). When ionic substances (salts) dissolve in water they dissociate into seperatre ions which are free to move about and therefore you have moving charge.
A human has salts on their skin. When a human is in water it is like having dissolved salts - now that water will conduct electricity. Be careful of newly found knowledge - It can be dangerous sometimes! can metal conduct electricity
For the purpose of elecronics and electrical engineering, materials are classified according to their electrical resistance, which describes how readily they allow electric current to pass when a voltage is applied. Apart from conductors, materials are classed as insulators (very poor conductors), semi-conductors (basically, materials whose ability to conduct electricity can be controlled), and superconductors which (below a critical e, usually a very low one) offer no significant electrical resistance, allowing circular currents, once established, to flow indefinitely.
michael jackson bad bad really really badDo you think Michael Jackson was really that "Bad"?
Because I'm Bad, I'm Bad-
Come On
(Bad Bad-Really, Really Bad)
You Know I'm Bad, I'm Bad-
You Know It
(Bad Bad-Really, Really Bad)
You Know I'm Bad, I'm Bad-
Come On, You Know
(Bad Bad-Really, Really Bad)
And The Whole World Has To
Answer Right Now
Just To Tell You Once Again,
Who's Bad . . .
im so sad about michael jacksons death he was the last music legand :[ i didnt even know him but idk its so sad..R.I.P!
i love this question by the way haha:]
I tmichael jackson bad bad really really badhink personally that michael jackson was just confused
He was an amazing artist but the whole child molester thing gave him a bad rep
his death just means that we lost another epic artist and we have one lest threat to todays children.
<3much love
lUcKy
Yes. It depends on your translation of bad. But if you mean bad as in cool. Then yes he was pretty AV儿劣AV儿劣* bad.
.....oh his story just makes me so sad because I feel like a family member has died evenmichael jackson bad bad really really bad though I barely knew him. the way he has touched the world is absolutely remarkable!
yeah he was "Bad"
but he wasn't bad.
Hahah :P
No i dont
No?
wtf?
I 'do' believe of what he was up to.
yeah he had too many thrillers and beat it yesterday
um no
read a book will you
nah
he seemed like a good guy
who was falsely accused
but that's just me
plenty of people have "other" opinions
Come On
(Bad Bad-Really, Really Bad)
You Know I'm Bad, I'm Bad-
You Know It
(Bad Bad-Really, Really Bad)
You Know I'm Bad, I'm Bad-
Come On, You Know
(Bad Bad-Really, Really Bad)
And The Whole World Has To
Answer Right Now
Just To Tell You Once Again,
Who's Bad . . .
im so sad about michael jacksons death he was the last music legand :[ i didnt even know him but idk its so sad..R.I.P!
i love this question by the way haha:]
I tmichael jackson bad bad really really badhink personally that michael jackson was just confused
He was an amazing artist but the whole child molester thing gave him a bad rep
his death just means that we lost another epic artist and we have one lest threat to todays children.
<3much love
lUcKy
Yes. It depends on your translation of bad. But if you mean bad as in cool. Then yes he was pretty AV儿劣AV儿劣* bad.
.....oh his story just makes me so sad because I feel like a family member has died evenmichael jackson bad bad really really bad though I barely knew him. the way he has touched the world is absolutely remarkable!
yeah he was "Bad"
but he wasn't bad.
Hahah :P
No i dont
No?
wtf?
I 'do' believe of what he was up to.
yeah he had too many thrillers and beat it yesterday
um no
read a book will you
nah
he seemed like a good guy
who was falsely accused
but that's just me
plenty of people have "other" opinions
wallpaper imagesHow do I put different wallpaper images on multiple monitors in Windows XP?
I've been able to do this on Macs forever, but I've never been able to figure out how to display a different wallpaper image on each monitor in a multiple monitor setup in Windows XP. I've got three monitors connected to a PC at work, but I'd like different wallpaper images.
There is no way to do this in XP natively, but you could always create a custom image that is three wallpaper images in one, so when it is displayed it looks like you have three wallpapers.
If you have .Net 2 or higher installed, you can use DisplayFusion...
http://www.binaryfwallpaper imagesortress.com/displayfusion/ been using this for over a year now, it's great.
you have to upload them all to "paint" and size them by right clicking on them and push skew and just save them all together and then press file andpress set as wall paper
Right click and click on "Set as background" It should be the fourth option down.=)
paste and level the pictures you use on paint, then you save it then go to "My documents" and go to "my Pictures" and right click the picture wallpaper imagesand select "set as wallpaper"
I don't think that's possible. I've tried and failed each time.
First of all let me start by saying only XP PRO or Media will allow this so if your using home give it up. You need to go to display setting and play around with them.
What are you trying to do here.
Extend your desktop?
Have multiple monitor doing the same thing?
One screen two different monitor. It all can be done by changing the setting in the display. You will have to goto advance setting.
There is no way to do this in XP natively, but you could always create a custom image that is three wallpaper images in one, so when it is displayed it looks like you have three wallpapers.
If you have .Net 2 or higher installed, you can use DisplayFusion...
http://www.binaryfwallpaper imagesortress.com/displayfusion/ been using this for over a year now, it's great.
you have to upload them all to "paint" and size them by right clicking on them and push skew and just save them all together and then press file andpress set as wall paper
Right click and click on "Set as background" It should be the fourth option down.=)
paste and level the pictures you use on paint, then you save it then go to "My documents" and go to "my Pictures" and right click the picture wallpaper imagesand select "set as wallpaper"
I don't think that's possible. I've tried and failed each time.
First of all let me start by saying only XP PRO or Media will allow this so if your using home give it up. You need to go to display setting and play around with them.
What are you trying to do here.
Extend your desktop?
Have multiple monitor doing the same thing?
One screen two different monitor. It all can be done by changing the setting in the display. You will have to goto advance setting.
google kids search engine safe searchWhat is a good search engine for kids?
I don't like my 9yo looking on google to search for things as homework answers. Is there a free and functional kid-safe search engine we could use? I have found a few by my google kids search engine safe searchown searches on google, but none of them seem to work well for my daughter.
dogpile.com
or ask.com
here are some search engines for kids
http://www.ajkids.com/
http://wwgoogle kids search engine safe searchw.yahooligans.com/
http://www.kidsclick.org/
http://www.ala.org/greatsites
I hope this help aswell
is good for kids
dogpile.com
or ask.com
here are some search engines for kids
http://www.ajkids.com/
http://wwgoogle kids search engine safe searchw.yahooligans.com/
http://www.kidsclick.org/
http://www.ala.org/greatsites
I hope this help aswell
is good for kids
lyrics fabulous songs? I'll list some lyrics. Can you fill in the blanks? (They are songs from the fabulous 60's)?
PLEASE POST THE ENTIRE SENTENCE.
1. "I think I'm going to be ___ I think it's _______. The girl that's driving me ____ is going away."
2. "When I'm ________ in my car and that man comes on the _______."
3. "I heard it through the _________. Not much longer would you be _____."
4. "My _____ were always putting him down...____, ____. They say he came from the _____ side of ____."
5. " Hey there Little Red ______ ____, you sure are looking good. You're everything a big ___ ____could want."
1. "I think I'm going to be sad I think it's today. The girl that's driving me mad is going away
2. "When I'm driving in my car and that man comes on the radio."
3. "I heard it through the grapevine. Not much longer would you be mine."
4. "My folks were always putting him down...down,down They say hlyrics fabulous songse came from the wrong side of town."
5. " Hey there Little Red Riding Hood you sure are looking good. You're everything a big bad wolf could want."
Thanks Sunshine! Usually by the time I think of the answers for these, 40 people have already answered!!
sad...today...mad
drivin...radio
grapevine...mine
friends...down, down...wrong...town
Ridin' Hood...Bad Wolf
that was fun!!
1. "I think I'm going to be ___ I think it's _______. The girl that's driving me ____ is going away."
2. "When I'm _drivin'_ in my car and that man comes on the _radio_."
3. "I heard it through the _grapevine_. Not much longer would you be _mine_."
4. "My _____ were always putting him down...____, ____. They say he came from the _wrong_ side of _the tracks_."
5. " Hey there Little lyrics fabulous songsRed _ridin'_ _hood_, you sure are looking good. You're everything a big _bad_ _wolf_could want."
I only know # 3. Grapevine, mine
and I kind of know #4 the last 2 words are po or poor and town
I grew up mostly in the 70's.
1. "I think I'm gonna be sad. I think it's today. The girl that's driving me mad is going away."
2. ?
3. "I heard it through the grapevine, not much longer would you be mine".
4. "My friends were always putting him down....down, down. They say he came from the wrong side of town".
5. "Hey there Little Red Riding Hood, you sure are looking good. You're everything a big bad wolf could want." HOWL!
1. "I think I'm going to be ___ I think it's _______. The girl that's driving me ____ is going away."
2. "When I'm ________ in my car and that man comes on the _______."
3. "I heard it through the _________. Not much longer would you be _____."
4. "My _____ were always putting him down...____, ____. They say he came from the _____ side of ____."
5. " Hey there Little Red ______ ____, you sure are looking good. You're everything a big ___ ____could want."
1. "I think I'm going to be sad I think it's today. The girl that's driving me mad is going away
2. "When I'm driving in my car and that man comes on the radio."
3. "I heard it through the grapevine. Not much longer would you be mine."
4. "My folks were always putting him down...down,down They say hlyrics fabulous songse came from the wrong side of town."
5. " Hey there Little Red Riding Hood you sure are looking good. You're everything a big bad wolf could want."
Thanks Sunshine! Usually by the time I think of the answers for these, 40 people have already answered!!
sad...today...mad
drivin...radio
grapevine...mine
friends...down, down...wrong...town
Ridin' Hood...Bad Wolf
that was fun!!
1. "I think I'm going to be ___ I think it's _______. The girl that's driving me ____ is going away."
2. "When I'm _drivin'_ in my car and that man comes on the _radio_."
3. "I heard it through the _grapevine_. Not much longer would you be _mine_."
4. "My _____ were always putting him down...____, ____. They say he came from the _wrong_ side of _the tracks_."
5. " Hey there Little lyrics fabulous songsRed _ridin'_ _hood_, you sure are looking good. You're everything a big _bad_ _wolf_could want."
I only know # 3. Grapevine, mine
and I kind of know #4 the last 2 words are po or poor and town
I grew up mostly in the 70's.
1. "I think I'm gonna be sad. I think it's today. The girl that's driving me mad is going away."
2. ?
3. "I heard it through the grapevine, not much longer would you be mine".
4. "My friends were always putting him down....down, down. They say he came from the wrong side of town".
5. "Hey there Little Red Riding Hood, you sure are looking good. You're everything a big bad wolf could want." HOWL!
confusing questions about lifeQuestions about Kim Jong Il?
I have a few questions about Kim Jong Il, sorry, I don't really know much about him and am a bit confused about his life/situation.
1. Is he evil?
2. What has he done bad in his lifetime/time of ruling?
3. What years did he rule?
4. Are we (Americans) happy he's dead?
5. Are South Koreans happy he's dead?
6. Are North Koreans happy he's dead?
Thanks so much :)
1. Yes. He's an evil bastard who brainwashes/starves/tortures/kills his own people.
2. See above.
3. 1994-today (well, technically, yesterday).
4. Yes. Again, he was an evil bastard.
5. Yes.
6. I'm sure a few are, but most probably confusing questions about lifearen't. He had them severely brainwashed, making them think he was a God and that he took care of them. Many are probably devastated.
Watch some documentaries on North Korea. It will make you angry and sad.
1. Is he evil?
-YES! HE HAS KILLED COUNTLESS PEOPLE AND IS JUST AWFUL HES WORSE THAN CHINA AND AFGHANISTAN!
2. What has he done bad in his lifetime/time of ruling?
-KILLED, KILLED, KILLED! Attacked Mongolia, destroyed religion, and make people think he was Allah.
3. What years did he rule?
-1994 -Till Today *May his evil spirit rest in peace
4. Are we (Americans) happy he's confusing questions about lifedead?
-No You douches dont give a AV儿劣* its just koreans, asians, and people like me who are part North Korean and PROUD!
5. Are South Koreans happy he's dead?
-Probably but worried fearing his son will be just as bad they are happy because he would kidnap citizens and brain wash them
6. Are North Koreans happy he's dead?
They have to mourn and be sad and act like their lord and savior is dead but deep down they are all hoping for change like me!
Im In AMERICA BTW
he finally died today
1. Is he evil?
2. What has he done bad in his lifetime/time of ruling?
3. What years did he rule?
4. Are we (Americans) happy he's dead?
5. Are South Koreans happy he's dead?
6. Are North Koreans happy he's dead?
Thanks so much :)
1. Yes. He's an evil bastard who brainwashes/starves/tortures/kills his own people.
2. See above.
3. 1994-today (well, technically, yesterday).
4. Yes. Again, he was an evil bastard.
5. Yes.
6. I'm sure a few are, but most probably confusing questions about lifearen't. He had them severely brainwashed, making them think he was a God and that he took care of them. Many are probably devastated.
Watch some documentaries on North Korea. It will make you angry and sad.
1. Is he evil?
-YES! HE HAS KILLED COUNTLESS PEOPLE AND IS JUST AWFUL HES WORSE THAN CHINA AND AFGHANISTAN!
2. What has he done bad in his lifetime/time of ruling?
-KILLED, KILLED, KILLED! Attacked Mongolia, destroyed religion, and make people think he was Allah.
3. What years did he rule?
-1994 -Till Today *May his evil spirit rest in peace
4. Are we (Americans) happy he's confusing questions about lifedead?
-No You douches dont give a AV儿劣* its just koreans, asians, and people like me who are part North Korean and PROUD!
5. Are South Koreans happy he's dead?
-Probably but worried fearing his son will be just as bad they are happy because he would kidnap citizens and brain wash them
6. Are North Koreans happy he's dead?
They have to mourn and be sad and act like their lord and savior is dead but deep down they are all hoping for change like me!
Im In AMERICA BTW
he finally died today
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