I need help with Chem...
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Thank you very much, as this helped me SOOOOOO much. Honestly, I don't like people to just give me the answer, as I somehow find it irritating and somewhat immoral. (?)
The slangs are easy to get used to for me, since I'm not exactly American, and not quite as ignorant. I was born in Argentina (lol), and by now I'm fluent in a few languages (not to brag), everything pretty much falls into place for me. I was a bit puzzled about something for a bit, but then I realized that it's just a laugh. (lol) Thank you for your concern.
Oh, and I do realize that in every other country, 16-year-olds know more, because Americans are retards. (Not to put anyone down, of course, but it's the truth. The sad and awful truth.) My College Chemistry book, special edition for Salt Lake Community College, didn't have anything to help me with this, even though it's for Biology. (btw, both are college classes.) (And yes, I am in high school.)(secondary education)
Once again, thank you. I will have to continue studying tomorrow because right now it's 2:17 AM, and I am exhausted. (sorry if nobody cares)
Thank you! :D
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Ah, one more thing, before I forget. What are Os and As in your schooling system? Are those higher education (tertiary)?
(Sorry if some of my stuff seems random, but that's what happens when you've studied in so many different places and don't know right from left anymore.)
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No problem ;)
GCE O level stands for General Certificate of Examination Ordinary level. It is based on secondary school education syallbus in Singapore.
GCE A level stands for General Certificate of Examination Advanced level. It is based on tertiary (junior college, before university) school education syallbus in Singapore.
And do take a good rest. Sleep is essential for a person to reach optimal performance.
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Originally posted by CJ:
Thank you very much, as this helped me SOOOOOO much. Honestly, I don't like people to just give me the answer, as I somehow find it irritating and somewhat immoral. (?)
The slangs are easy to get used to for me, since I'm not exactly American, and not quite as ignorant. I was born in Argentina (lol), and by now I'm fluent in a few languages (not to brag), everything pretty much falls into place for me. I was a bit puzzled about something for a bit, but then I realized that it's just a laugh. (lol) Thank you for your concern.
Oh, and I do realize that in every other country, 16-year-olds know more, because Americans are retards. (Not to put anyone down, of course, but it's the truth. The sad and awful truth.) My College Chemistry book, special edition for Salt Lake Community College, didn't have anything to help me with this, even though it's for Biology. (btw, both are college classes.) (And yes, I am in high school.)(secondary education)
Once again, thank you. I will have to continue studying tomorrow because right now it's 2:17 AM, and I am exhausted. (sorry if nobody cares)
Thank you! :D
junior high = 3 years after primary/elementaryhigh school = 3 yrs after junior high
So basically, if ure in high school 16 u are, in our terms, in sec 4!!
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Singapore is truly an education hub
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I know about the 1-6 years, since that's the system used in Argentina.
I would totally love to be in Singapore if it's such a great place to study! (Sounds like it is!) American education isn't very advanced. I had to change schools to make it more challenging, and they're still not teaching me anything new. >< It's pretty frustrating...
Thank for the info, btw!
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What's cny?
It's a holiday, right? What do you celebrate? (Must be totally cool.) (*One that always thinks foreign countries and cultures are cool/awesome/the greatest/ ... you name it.)
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So basically if the element gains an electron, it has a positive charge, and vise versa, right?
If this is true, does the element with the smallest amount of valence electrons always lose the one or two?
For H, is it H-Li+? (subscript)
And for the second part, Li, Be, Na, Mg, K, and Ca all can form ionic bonds, and H can but only if it's bonded with another metal, since it's not a metal itself, right? And out of all these, only H can form a covalent bond, because all the others are metals, and only non-metal atoms can form covalent bonds, right? (#_#)
I know this isn't exactly a part of my homework, but what role does the reactiveness of an element have to do with the bonds?
(Too many questions, too many rights. @_@)
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btw, I'm a 5th year (second year of high school). I'm turning 17 next month.
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... Does the order matter when you write the ionized bonds? Like H-Li+ can also be Li+H- so long as you don't change the charges?
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In case u dont knw, its like 6.47 am here, our time is different from your time over there in the states. So not much people will reply u.
CNY, means Chinese New Year, or the Lunar New Year some people call it. For us, the chinese follows the Lunar Calender. For more info, pls use ur best friend, Google.
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r u kidding! i hate google! it's too confusing and most of the time ends up throwing random stuff at your face. btw, i've already tried it.
btw, i do know what time it is over there, since it's on the upper left-hand corner! (lol) Kind of obvious nobody's gonna answer me at 6am! I just post it coz it's 4pm here, and also have a lot of other stuff to do.
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oh and i already looked up CNY just been too busy to post about it again.
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btw, eveybody, Happy CNY! (now i remember lol)
ah, hang on, that would be 'yesterday' for you guys... sorry
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Be2+O2-? Or is it without the twos?
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One last thing, now that I'm done. Can anyone explain the subatomic structure of Fe (Iron)?
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Sorry, everyone! I kind of answered my own questions through the process of asking them. Thank you!
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Originally posted by CJ:
btw, eveybody, Happy CNY! (now i remember lol)
ah, hang on, that would be 'yesterday' for you guys... sorry
It's actually today :D
If you have any physics or maths questions, do ask here. I specialise in that.
You can use this website or share with your friends as well:
ExamWorld -
Originally posted by CJ:
... Does the order matter when you write the ionized bonds? Like H-Li+ can also be Li+H- so long as you don't change the charges?
hydrogen and lithium are covalently bonded, not ionically bonded. cause bothe hydrogen and lithium are a cations [H+] and [Li+] but hydrogen needs 1 electron to achieve the noble configuration, so it shares 1 electron with Lithium, covalently. but this way, only the hydrogen ion would be in a stable duplet structure, but Lithium would still not be able to achieve the stable octet structure. which is why, it's pretty much impossible for you to have a LiH compound in practical/real life.
but Be2+ and O2- (being cations and anions respectively) would be able to form BeO. the twos arnt needed.
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Originally posted by stuffedbears:
hydrogen and lithium are covalently bonded, not ionically bonded. cause bothe hydrogen and lithium are a cations [H+] and [Li+] but hydrogen needs 1 electron to achieve the noble configuration, so it shares 1 electron with Lithium, covalently. but this way, only the hydrogen ion would be in a stable duplet structure, but Lithium would still not be able to achieve the stable octet structure. which is why, it's pretty much impossible for you to have a LiH compound in practical/real life.
but Be2+ and O2- (being cations and anions respectively) would be able to form BeO. the twos arnt needed.
ignore the above post.
Lithium hydride is an IONIC compound.
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Originally posted by CJ:
ok so i have to create ionic bonds with H, Li, Be, Na, Mg, K, and Ca. I know that with the Group 1 (H, Li, Na, K) elements, I can easily combine them with Cl. But what about the Group 2 (Be, Mg, Ca) elements? What can I use there?
For a while I thought I had to use specific elements for all of these, but are there specifics for the Group 2 elements to bond with?
Group 2 element reaction with Group 7 [Sulphur... ] is more commonGroup 1 element are the reactive metals ..
Electron structure accounts for their reactivity
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Originally posted by stuffedbears:
hydrogen and lithium are covalently bonded, not ionically bonded. cause bothe hydrogen and lithium are a cations [H+] and [Li+] but hydrogen needs 1 electron to achieve the noble configuration, so it shares 1 electron with Lithium, covalently. but this way, only the hydrogen ion would be in a stable duplet structure, but Lithium would still not be able to achieve the stable octet structure. which is why, it's pretty much impossible for you to have a LiH compound in practical/real life.
but Be2+ and O2- (being cations and anions respectively) would be able to form BeO. the twos arnt needed.
pls take note that in metal hydrides, the hydrogen has oxidation number -1 instead... and yes it's a ionic compound...
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Awesome thanx!!!!
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Oh, and by the way, I won't be taking physics for another 2 semesters... which is sad. I might actually be able to squeeze it in as a summer class, but most likely not. :(
I'm fairly good at math, but if I ever get stuck I'll be sure to post!!!!
Please check out my forum in the Homework Forum for English help. Go ahead and use it as a reference if you need to, as well!
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So basically if the element gains an electron, it has a positive charge, and vise versa, right?
No. If an element gains an electron, it has a negative charge, and vice versa.
If this is true, does the element with the smallest amount of valence electrons always lose the one or two?
Yes.
For H, is it H-Li+? (subscript)
Yes
And for the second part, Li, Be, Na, Mg, K, and Ca all can form ionic bonds (when only with a non-metal), and H can but only if it's bonded with another metal, since it's not a metal itself, right? And out of all these, only H can form a covalent bond, because all the others are metals, and only non-metal atoms can form covalent bonds, right? (#_#)
Yes
I know this isn't exactly a part of my homework, but what role does the reactiveness of an element have to do with the bonds?
A more reactive metal forms the bonds more easily.You'll learn more about it when you're studying properties of the periodic table.
hydrogen and lithium are covalently bonded, not ionically bonded. cause bothe hydrogen and lithium are a cations [H+] and [Li+] but hydrogen needs 1 electron to achieve the noble configuration, so it shares 1 electron with Lithium, covalently. but this way, only the hydrogen ion would be in a stable duplet structure, but Lithium would still not be able to achieve the stable octet structure. which is why, it's pretty much impossible for you to have a LiH compound in practical/real life.
but Be2+ and O2- (being cations and anions respectively) would be able to form BeO. the twos arnt needed.
HAHAHAHAHA.
EDIT: Ok, someone already corrected the mistake. In fact two people.