Catalyst: Monday 11/5

Classify the following as an element, compound, heterogeneous mixture, or homogeneous mixture:

- Diet Coke- Cap’n Crunch cereal- Strontium (Sr)- Sugar

Date Assignment

Monday 11/5 Finish the rest of the questions on the study guide

Tuesday 11/6 Study for the Midterm

Wednesday 11/7 [MIDTERM TODAY!]TBA

Thursday 11/8 Book Problems: 4, 13, 17, 19, 41

Friday 11/9 [Ion Quiz # 5 – All polyatomics minus exceptions]Naming Problem Set DUE Monday

Week 9 HW: 11/5-11/9

Catalyst Study Guide Problems Review Naming Type I, Type II, and Type IV

Compounds Naming Type III Compounds

Today’s Plan

Type I = ionic compounds with monatomic cations and anions

Type II = ionic compounds with variable charge cations and monatomic anions

Type IV = ionic compounds with polyatomic ions

Type I, Type II, Type IV

Always name the cation before the anion Remember, paws first! …that’s how cats

land.

Naming them:

Did I take this analogy too far?

…maybe

But you’ll remember! (for life)

Paws first, then… Just name the ions!

◦ [cation name] [anion name] For example (Type I):

◦ NaCl = sodium chloride◦ Ag2O = silver oxide◦ MgF2 = magnesium fluoride

Naming them:

You try (Type IV)

Formula Name

AgNO3

K2SO4

BaNO3

Silver nitrate

Potassium sulfate

Barium nitrate

Same as Type I and Type IV except you have to indicate what charge the variable charge ion has!

For example:◦ FeO = iron (II) oxide◦ Fe2O3 = iron (III) oxide◦ NiH2 = nickel (II) hydride◦ NiBr3 = nickel (III) bromide

Type II – Variable Charge

Type III = covalent compounds with only nonmetals

Key: these are not compounds of ions! That is why the rules are so different.

Type III Naming

1. Name the first element using the element name: boron

2. Name the second element as if it were an anion: fluoride (instead of fluorine)

3. Use prefixes to denote numbers of atoms:◦ 1 boron: if only 1 of the first atom, no prefix◦ 3 fluorine: tri-

◦boron trifluoride

Name BF3

1. Name 1st element: nitrogen

2. Name 2nd element like an anion: oxide

3. Use prefixes to denote numbers of atoms◦ 1 nitrogen: if only 1 of the first atom, no prefix◦ 1 oxygen: mono-

◦nitrogen monoxide

Name NO

Never use “mono” at the beginning of the compound name, if there’s only 1 of the first atom no prefix is necessary.

If the vowel at the end of the prefix plus the vowel at the start of the element name is awkward, (e.g. mono- and oxide) the vowel on the prefix gets dropped. (monoxide, tetroxide)

Some tips

Number of atoms Prefix1 mono-2 di-3 tri-4 tetra-5 penta-6 hexa-

Prefixes!

Try some! P4O6 SO2 Dinitrogen trioxide PCl5 Sulfur dioxide Bromine pentafluoride

tetrahosphorus hexoxide

Sulfur dioxide N2O3 Phosphorus

pentachloride SO2 BrF5

Charge practice: http://www.chemfiles.com/flash/polyions1.html

Name/formula practice: http://www.chemfiles.com/flash/polyions.html

(Really tough ion/compound practice: http://www.chemfiles.com/flash/polyatomic_ions.html)

Two super awesome websites for polyatomic ion practice!

Catalyst: Thursday 11/8

• Complete #4 from the Reflection Sheet in class.

• Define the following vocab terms:• Binary compound• Ionic compound• Covalent compound• Metal vs. non-metal• Polyatomic ion

Date Assignment

Monday 11/5 Finish the rest of the questions on the study guide

Tuesday 11/6 Study for the Midterm

Wednesday 11/7 [MIDTERM TODAY!]Flow chart

Thursday 11/8 Book Problems: 4, 13, 17, 19, 41Reflection Sheet

Friday 11/9 [Ion Quiz # 5 – All polyatomics minus exceptions]Naming Problem Set DUE Wednesday

Week 9 HW: 11/5-11/9

Acids = molecules that produce H+ ions in water

First recognized for the sour taste of their solutions: e.g. citric acid in lemons and limes is responsible for that sour taste

An acid is an anion with one or more H+ attached to it that it can let go of when dissolved in water.

Acid Naming (last type!)

If the anion does NOT contain oxygen…HCl

1. Use the prefix hydro- and the suffix –ic after the “root” of the element:

chlorinechloride

hydrochloric acid

Name for HCl? What kind of compound is it?

Acid Naming Rules 1

Are they both ions? Is it covalent? …they are both ions!

hydrogen chloride

…dissolves in water to form: hydrochloric acid.

HCl

If the anion does NOT contain oxygen…HCN

1. Use the prefix hydro- and the suffix –ic after the “root” of the element:

cyanidehydrocyanic acid

Name for HCN? What kind of compound is it?

Acid Naming Rules 1

Are they both ions? Is it covalent? …cyanide is a polyatomic ion and hydrogen

can also be an ion so it is ionic!

hydrogen cyanide

…dissolves in water to form: hydrocyanic acid

HCN

Acids are ionic compounds that dissolve in water to form a solution that we name as an acid.

They are not often found/used in their solid form so we prefer to name them as acids in their solution form.

If the anion DOES contain oxygen…H2SO4

1. Take the root name of the central element or the anion name and add a suffix:-ic when the anion ends in –ate-ous when anion names in –ite

hydrogen sulfate…sulfuric acid

Acid Naming Rules 2

If the anion DOES contain oxygen…H2NO2

1. Take the root name of the central element and add a suffix:-ic when the anion ends in –ate-ous when anion names in –ite

hydrogen nitrite…nitrous acid

Acid Naming Rules 2

perchloratechloratechlorite

hypochlorite

HClO4

HClO3

HClO2

HClO

Acid Naming Rules 2

perchloric acidchloric acid

hypochlorous acid

chlorous acid

perbromatebromatebromite

hypobromite

HBrO4

HBrO3

HBrO2

HBrO

Acid Naming Rules 2

perbromic acidbromic acid

hypobromous acid

bromous acid

Acid Naming Summary

Naming Type 1 Naming Type 2

NO Oxygen

Always:

Hydro[anion root]icacid

CONTAINS Oxygen What is the key

element? How many oxygens

does it have?

(prefix)[element](suffix)

acid