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Offline naz86

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A little understanding to a new chem student
« on: May 19, 2007, 04:21:16 PM »
what is a carbide?, and what elements does it contain if any.

Offline Mitch

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Re: A little understanding to a new chem student
« Reply #1 on: May 19, 2007, 04:39:44 PM »
carbon of course
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Offline rox1co

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Re: A little understanding to a new chem student
« Reply #2 on: May 19, 2007, 04:47:55 PM »
what is a carbide?, and what elements does it contain if any.
what does the suffix -ide indicate?

you need to go over how the elements are named

Offline naz86

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Re: A little understanding to a new chem student
« Reply #3 on: May 19, 2007, 05:19:40 PM »
i dnt knw what the ide is there for.
i understand that carbide is carbon.
but im confused because its carbide, and im unsure what the 'ide' part is, or what part of an element it is formed from

Offline rox1co

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Re: A little understanding to a new chem student
« Reply #4 on: May 19, 2007, 05:36:10 PM »
i dnt knw what the ide is there for.
i understand that carbide is carbon.
but im confused because its carbide, and im unsure what the 'ide' part is, or what part of an element it is formed from
when we name compounds such as calcium & carbon, the cation keeps its name, while the anion has an -ide suffix = Calcium carbide

that's all to it

Offline english

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Re: A little understanding to a new chem student
« Reply #5 on: May 19, 2007, 05:40:31 PM »
Carbide is a negatively charged carbon atom (more commonly referred to as a carbanion), not to be confused with carbene, a neutral carbon atom with a lone pair.

-ide is indicative of the negative (-) charge the atom bears.

Carbon cations (carbocations) have a positive charge (+), and their names end in -ylium.

Offline Yggdrasil

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Re: A little understanding to a new chem student
« Reply #6 on: May 19, 2007, 06:56:12 PM »
In general the -ide suffix is used to denote the anion of an element in ionic compounds.  For example, oxide refers to the O2- anion in compounds such as iron (III) oxide (Fe2O3) or calcium oxide (CaO).  Other anions with the -ide ending include sulfide (S2-) and chloride (Cl-).

Other suffixes are used to denote other types of anions.  For example, the -ate suffix usually refers to an oxyanion, an anion formed from an element bonded to oxygen.  Therefore, while sulfide is S2-, sulfate is SO42-.

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