Chemistry 2-11-09 Binary Molecular Compounds
CHEMISTRY: Okay, I’m not saying that learning to name and write chemical formulas is as bad as a jellyfish sting, but you do have to really, really pay attention to the details!! Here’s the lecture from Wednesday on writing formulas and names for binary molecular compounds. Part of it’s really similar to what you learned to do yesterday for ionic compounds, but another part is totally different.
Make sure you keep everything straight. Do something that will organize all the information for you, so you won’t get confused. Also, don’t forget the lists you have to memorize – polyatomic ions, numerical prefixes, and tomorrow or Friday I’ll tell you about acids. And practice, practice, practice!!!
February 11th, 2009 at 8:07 PM
how do we know when to use the ionic compound way or the other way to write the formula
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February 11th, 2009 at 9:38 PM
The problem will ask for it.
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February 12th, 2009 at 8:05 AM
How do we name binary molecular compounds?
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Austin Welch Reply:
February 12th, 2009 at 9:19 PM
Alan, to name molecular compounds, you use the stock system and/or the prefix system. You use the prefix system if your naming molecules only.
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February 12th, 2009 at 9:58 AM
What are the two systems for naming molecular compounds?
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February 12th, 2009 at 9:58 AM
Leslie-
The two systems are the stock system and prefix system.
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February 12th, 2009 at 10:09 AM
for the stock system use either prefixes or roman numerals.. Never both.
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February 12th, 2009 at 12:02 PM
whats the difference between bionary ionic compounds and bionary moclecular compounds?
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February 12th, 2009 at 12:04 PM
whats the difference between binary acids and oxyacids?
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February 12th, 2009 at 12:30 PM
Courtney- The difference between binary acids and oxyacids is that binary acids consist of two elements(H and one of the halogens). But oxyacids are the acids thats contain H,O, and only one more elemnt (Usually a nonmetal)
Example: Binary acid= HF (hydrogen and one halogen)
Oxyacids= HClO (Hydrogen, oxygen, and one more element)
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February 12th, 2009 at 2:07 PM
what steps should you follow in wrtting the stock system
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February 12th, 2009 at 5:10 PM
what is an ionic compound?
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February 12th, 2009 at 5:37 PM
Kaele, I think the difference is that the ionic compound is made of an ionic bond and the molecular is made of a covalent bond.
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February 12th, 2009 at 5:42 PM
Abby Purdom: An ionic compound is where two or more ions are held next to each other by electrical attraction. They are composed of cations(+) and anions(-). An example- sodium chloride
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February 12th, 2009 at 6:01 PM
what are binary molecular compounds?
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February 12th, 2009 at 6:43 PM
how do you know wether to use the stock system or the prefix system?
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Mary Gates Reply:
February 13th, 2009 at 6:42 AM
I think the instructions will just tell you because I don’t think that there are exact rules about when to use which.
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February 12th, 2009 at 9:25 PM
Cathy binary ionic compounds are compounds consisting of two elements with a equal number of positive and negative charges
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February 12th, 2009 at 9:28 PM
Cathy binary molecular compounds are compounds consisting of two elements with a equal number of positive and negative charges
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February 12th, 2009 at 10:03 PM
When naming a compound will the first element always be the original name?
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February 12th, 2009 at 10:15 PM
Yes, Marissa. The first element will have it’s origional name
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February 12th, 2009 at 10:27 PM
Which elements have more than one charge?
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February 12th, 2009 at 10:47 PM
John, all D block elements can and also lead and tin can.
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February 13th, 2009 at 12:21 PM
how do you know when to use the different types of chemical formulas?
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February 13th, 2009 at 12:29 PM
what is the stock system?
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February 13th, 2009 at 1:02 PM
ashly, the sotock system is what scientists use to indicate an ion’s charge using roman numerals
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February 13th, 2009 at 1:40 PM
When using the stock system for naming compounds, how do you know which roman numeral to put in the parenthesis?
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February 13th, 2009 at 2:02 PM
when using the stock system what does the roman numeral stand for
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February 13th, 2009 at 4:07 PM
how do you do the formula for polyatomic ions?
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February 13th, 2009 at 5:06 PM
The roman numbers stand for how many ions a certain element contains.
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February 13th, 2009 at 9:55 PM
maybe this is slightly beyond us so far but. this was an interresting thought i had the other day that seemed like it will be comming in really soon if i didnt alrdy miss it.
In diferent acids: the PH levels, how are they related to the different molecular composition or possibly e- config?
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February 13th, 2009 at 10:11 PM
When does one use the prefix system rather than the stock system?
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February 13th, 2009 at 10:41 PM
What are the differences between the prefix and stock systems?
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February 14th, 2009 at 9:42 PM
Jake im not sure. But I think its the amount of charges it can have.
Also I posted this last night but it isnt here
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February 14th, 2009 at 9:47 PM
What is a monotomic ion?
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February 14th, 2009 at 10:21 PM
what’s stock system?
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February 15th, 2009 at 9:41 PM
SORRY but i forgot to do this earlier. Will you always use ratios when you use the stock system?
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February 15th, 2009 at 9:44 PM
SORRY I forgot to do this earlier. Will you always use ratios when using the stock system?
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