Major Points• Using Type 1 nomenclature
• Using Type 2 nomenclature • Using Type 3 nomenclature • Naming Acids |
Example Problems1. What is the chemical formula for Aluminum Chloride?
Answer: AlCl3 2. What is the name for Fe2O3? Answer: Iron(III) Oxide 3. What is the chemical formula for Carbon Dioxide? Answer: CO2 4. Identify which type of nomenclature (I, II, or II) you would use for this compound: MnO2 Answer: Type II 5. When do you use Type I nomenclature? Answer: When the compound consists of a metal with one charge and a nonmetal, use Type 1 nomenclature. |
Using Type 1
To name compounds using Type 1, make sure that the elements in the compound are a metal with one charge and a nonmetal.
(These metals will probably be found in the S Orbital) Let's take this example, going from symbol to name: LiCl Li has a charge of +1, and Cl has a charge of -1. We know that this compound will have a 0 charge because of the balance with the charges. Take the ending off of Chlorine and add -ide to make it an ionic compound. ---> Chloride Don't do anything to Lithium. You'll end up with Lithium Chloride! That's all you have to do in order to name an ionic compounds using Type 1. Now, let's go from name to symbol: Sodium Oxide. We know that we will have Na and O. We can see that Sodium has a charge of +1 and Oxygen has a charge of -2, so we balance the compound by adding another Sodium, getting Na2O. Just remember what you learned from a couple chapters ago about making ionic compounds have a charge of 0! |
Using Type 2To name compounds using Type 2, make sure that you are using a metal with two or more charges.
(These metals will either be transition metals or "other" metals) Let's use Iron(II) Fluoride [Note that we use Roman Numerals in Type 2] The Roman numerals designate the current charge of the metal, since it has more than one charge. We see that Iron has a charge of +2 and Fluorine has a charge of -1. To balance the compound, we will be left with FeF2. To go from symbol to name, let's use FeF3. We know that Fluorine's charge is going to be 1, and we see that there have to be three of them to balance out the Iron. If there are 3 Fluorines with one charge, we multiply 3 x 1. We get three, and then divide by the number of Iron atoms (1) 3 ÷ 1 = 3, so we know that Iron has a charge of 3. Iron(III) Fluoride. <--- remember the -ide! |
Using Type 3
To name compounds using Type 3, you need to make sure that your compound consists of only nonmetals.
We'll use H2O.
Note that there are two Hydrogens and one Oxygen in this compound. If you need to, refer to the prefix table above to find the prefix for 2.
Now, stick that prefix before the word "hydrogen" ---> dihydrogen
We see that there is only one Oxygen in the compound, so we know the prefix will be "mono" ----> monoxide
Stick the two new words back together to form dihydrogen monoxide.
Now, we'll go from name to symbol.
Take dinitrogen tetrachloride.
If we look at the prefixes in front of the words, we can tell that Nitrogen has 2 atoms and Chlorine has 4 atoms.
N2Cl4.
Remember, you don't have to simplify N2Cl4. It's already the way it needs to be.
If you have a compound like CO, where the first element only has one atom, you do not need to add the prefix "mono" to the element.
Carbon Monoxide.
We'll use H2O.
Note that there are two Hydrogens and one Oxygen in this compound. If you need to, refer to the prefix table above to find the prefix for 2.
Now, stick that prefix before the word "hydrogen" ---> dihydrogen
We see that there is only one Oxygen in the compound, so we know the prefix will be "mono" ----> monoxide
Stick the two new words back together to form dihydrogen monoxide.
Now, we'll go from name to symbol.
Take dinitrogen tetrachloride.
If we look at the prefixes in front of the words, we can tell that Nitrogen has 2 atoms and Chlorine has 4 atoms.
N2Cl4.
Remember, you don't have to simplify N2Cl4. It's already the way it needs to be.
If you have a compound like CO, where the first element only has one atom, you do not need to add the prefix "mono" to the element.
Carbon Monoxide.
Online Resources
Naming Acids: http://www.kentchemistry.com/links/naming/acids.htm
Types 1/2 Rules/Explanation: http://www2.pvc.maricopa.edu/tutor/chem/chem130/nomenclature/rules1.html
Type 3 Rules/Explanation: http://www2.pvc.maricopa.edu/tutor/chem/chem130/nomenclature/rules3.html
Types 1/2 Rules/Explanation: http://www2.pvc.maricopa.edu/tutor/chem/chem130/nomenclature/rules1.html
Type 3 Rules/Explanation: http://www2.pvc.maricopa.edu/tutor/chem/chem130/nomenclature/rules3.html
Video Resources
Type 2 Nomenclature Walkthrough: http://www.youtube.com/watch?v=VQeIJEj8bF4
Type 3 Nomenclature Walkthrough (by me!): https://vimeo.com/53294290
Type 3 Nomenclature Walkthrough (by me!): https://vimeo.com/53294290
Activity Resources
Naming Acids Worksheet: http://myweb.astate.edu/mdraganj/Acids.html
Naming Acids Worksheet Answers: http://myweb.astate.edu/mdraganj/Acidsanswers.html
Nomenclature Type 1 Problems: http://www.quia.com/quiz/3379654.html
Nomenclature Type 2 Problems: http://www.quia.com/quiz/3379638.html
Nomenclature Type 3 Problems: http://www.quia.com/quiz/3908031.html
Prefixes Flashcards: http://quizlet.com/6248210/chem-latin-prefixes-flash-cards/
Naming Acids Worksheet Answers: http://myweb.astate.edu/mdraganj/Acidsanswers.html
Nomenclature Type 1 Problems: http://www.quia.com/quiz/3379654.html
Nomenclature Type 2 Problems: http://www.quia.com/quiz/3379638.html
Nomenclature Type 3 Problems: http://www.quia.com/quiz/3908031.html
Prefixes Flashcards: http://quizlet.com/6248210/chem-latin-prefixes-flash-cards/