Chapter 2: Lesson 1

Nomenclature

Chapter 2: Lesson 1 - Nomenclature

Objective:

Be able to name and write formulas for ionic compounds including transition metals and polyatomic ions.

Be able to name and write formulas for acids.

Be able to name and write formulas for hydrates.

Be able to name and write formulas for covalent compounds.

Vocabulary:

Ionic, Covalent, Transition Metal, Octet Rule, Charges, Subscript

Ionic vs. Covalent:

There are two different types of compounds (2 or more elements) ionic and covalent. This is important because compounds of each type have very different properties, especially when they are put in water. Due to their different nature, they have different systems for naming them. To tell the difference between them ask yourself if the compound contains a metal. The metal is always listed first in the compound. Check the periodic table out to the right. Metals are on the left side of the table and non-metals are on the right. Covalent Compounds are two non-metals. While ionic compounds are made of one metal and one non-metal. 85% of the periodic table are metals!

Ionic Compounds

Ionics must contain a metal and a non-metal!

A Poly Atomic Ion Chart Has been provided below. (You may want to print this!)

When writing a compound the metal always goes first! NaCl

Naming and Writing Ionic Bonds Introduction

Simple Ionic Nomenclature.mp4

Using Transition Metals when naming.mp4

Working with Transition Metals

Form Ionic Compounds when bonded with non-metals.

Charge is given in roman numerals.

Roman Numerals (1-7):

I, II, III, IV, V, VI, VII

Naming with Polyatomics.mp4

Naming with Polyatomic Ions

Don't forget to use your chart. You can print a polyatomic ion chart in the class resource tab.

Naming and Writing Covalent Compounds

The easier naming system is for covalent compounds often referred to as molecules or molecular bonds. For naming these componds we simply identify how many atoms of each are in the compound by using a prefix.

Dihydrogen Monoxide would be H2O! Tetraphosphorus Nonoxide would be P4O9.

1 Mono-

2 Di-

3 Tri-

4 Tetra-

5 Penta-

6 Hexa-

7 Hepta-

8 Octa-

9 Nona-

10 Deca-

Covalent Naming.mp4

Check Your Understanding:

On the two questions below, think about the question, then click on the down arrow when you have your answer to check to see if you are correct.

What type of compound is Chromium (II) Phosphide? How would you write its formula?

Since Chromium is a metal and phosphorous is a non-metal, this is an ionic compound with a formula of Cr3P2

2. What type of compound is P4O6 and how would you name it?

Since both phosphorous and oxygen are non-metals, this compound would be covalent. Tetraphosphorous Hexoxide

Organic Naming

This system is very similar to covalent naming with a few differences. This is for compounds containing carbon and hydrogen only in single bonds. For example C3H8 or C6H14. The prefix describes the number of carbons and we end these compounds using the suffix -ane.

1 Meth-

2 Eth-

3 Prop-

4 But-

5 Pent-

6 Hex-

7 Hept-

8 Oct-

9 Non-

10 Dec-

Organic Naming.mp4

Check Your Understanding:

On the two questions below, think about the question, then click on the down arrow when you have your answer to check to see if you are correct. Use the animation to answer the two questions.

Click on the mass spec of chlorine to watch an AP Classroom presentation on mass spectrometry!

Based on the graph, How many stable isotopes does chlorine have?

There are two peaks so two!

2. What is the average mass of chlorine?

((35*3)+(37*1))/4=35.5amu

You have finished Lesson 2!

Be sure to head over to google classroom and fill out the exit pass.

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