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  • Welcome to another tutor sure provided by the Educational Support Services

  • Department up the high carbon Community College in snacks fell Pennsylvania

  • which is just outside a valid tell these videos review key learnings for the

  • science courses provided herein tell Tracy

  • completion member that the Educational Support Services Department does provide

  • walk into during five days a week this video review the

  • basic naming conventions that we use for ion I can call failing compounds in

  • chemistry

  • house start at the bottom here

  • just two to let you know that I E um will review how to deal with transition

  • metals and I am compounds on the next slide

  • in this video and that for polyatomic ions in acids I'll have a separate video

  • that you can look up and use but if we start with basic Diana compounds

  • how to compounds are a metal in a non-metal

  • combined together and the naming convention

  • is the metal is just um

  • stated its full name and as a second term

  • you will state the non-metal ru

  • plus you landed with I D E and I'll show you

  • the first example a sodium chloride you name the metal

  • strictly sodium and the non-metal here

  • is chlorine hand you take the route of chlorine which is Clore celo

  • Chlo are and added and I D E

  • risen indeed so its sodium chloride

  • when you move on to the next example you'll see lithium

  • sulfide you notice the metal you still just say the

  • the full metal name lithium you do not have to

  • address the subscript authors to hmmm

  • and then for sulfur over here

  • nonmetals the routers SU LF

  • and then he had the ides a sulfide and then

  • the last example I have aluminum oxide again you just

  • state the metal you don't worry about the subscript

  • and also here on the Tom non-metal

  • you do not worry about the subscript you um

  • you represent an oxygen here this the route is all wax

  • and edger I D E for aluminum oxide

  • and Dom so the subscripts

  • um welcome into name mean hun I am account pounds

  • that's basically because you can look at the to charges

  • %uh home-based charges of aluminum in oxygen

  • you out you know aluminum oxide must be al2o3

  • see only way it can be formed up so you don't need to show

  • any representation of the subscripts now we go to

  • Cole valence there you do home

  • have to in some way address

  • the subscripts and so

  • Kovan its are non metals with another non-metal

  • to prefix here in green that's how you address the

  • so serve hmmm subscripts

  • in the elements so like for down down here in SF's

  • 6 you gonna deal with the 6-foot-2 in some way with a prefix prefix

  • as to be on either term the first others second

  • and the the next one down here you'll see a when the two in a 5-4 gonna have

  • to

  • deal with those prefix though such scripts

  • so let's look at our first one nitrogen

  • oxide we have no: because the subscripts here are both won

  • hmmm you do not need to use a prefix model

  • model represents one %uh but if

  • the Nomad the basic um nomenclature

  • for cough and a compound you don't need to use

  • model Hudson if you don't see a term it's implied that its model so

  • you not the same model nitrogen it's just nitrogen

  • safety and a second term its oxygen

  • with the the room with the iDEN date so it's oxide

  • you don't have to say mono now you will obviously come across some exceptions

  • are very common one that

  • yeah I'm sure you'll deal with your science classes see all which is carbon

  • monoxide

  • in there they do use um the modern

  • form on oxide but that's just

  • %uh a long time use it's not really following the namee

  • a convention but it's just been you so much

  • over the years that everybody how uses it that term

  • now so that is one exception a and there are few others occasionally you may come

  • across

  • with the model term so now we look at

  • the next example we have here um

  • solve for with 6 Florence

  • again because sulfurous a single element there

  • you just use the full term of sulfur

  • but now on the farm the fluorine

  • you going to use a prefix hexafluoride represents six

  • your roof for fluorine is fluo

  • our floor and then your iDEN deed

  • salt sulphur hexafluoride in our final example here for Oracle valances

  • and 2005 here you need to use a prefix a dying nitrogen

  • and a gurney you sure pentoxide

  • pentoxide so you're prefix

  • you wrote when you're heading there suffix if I D

  • so if we now move over to our

  • seconds convention here

  • I wanted to get rid of this their ego

  • um if we have a transition metal in arianna count pound

  • transition metals um most of them are some other

  • can have more than one oxidation state

  • and so you need to address that in the name me

  • so for transition metals you you name them that'll

  • but you also have to give some indication up with the oxidation state

  • is

  • you do that with the Roman numeral and then again UN with here

  • your non-metal routine your ID sonar first example with iron

  • um chloride I say if Iran chlorine

  • in this case hired here is hired three witches

  • FEC plus 23 that's the

  • %ah oxidation state of iron in this case

  • so you have hired three Roman numeral 3 here

  • %uh chloride the route and the ID the suffix

  • the Nexus sample here CEUs this case

  • its copper to sulfide

  • and a copper here represents

  • its oxidation state is close to you notice in the next example

  • see you to s--- here the

  • oxidation state a copper is plus one

  • it so its copper one sulfide

  • so by doing the one in the two

  • you can rip you know where the you have CEUs

  • for cu2+ s so it's important when you have a

  • transition metal with multiple oxidation states

  • that you introduce om this Roman numeral convention

  • and then again as I mentioned ball have another video here in polyatomic ion

  • said

  • in Aus on a min yes it's thank you

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B2 中高級

命名離子和共價化合物 (Naming Ionic and Covalent Compounds)

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    Shih 發佈於 2021 年 01 月 14 日
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