Naming Ionic Compounds with Polyatomic Ions

Reminder: We have a test
Mon 3/24 - Tues 3/25

Today we are going to finish learning how to name ionic compounds to prepare for our test!

This test will go on fourth quarter

Write down homework:

Naming Flow Chart Video

Finish Test Study Guide

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Multiple Choice

Study the chemical formulas. Which is true?

• Parentheses are used around any ion used more than once in a chemical formula

• Parentheses are used around any polyatomic ion in a chemical formula

• Parentheses are used around any polyatomic ion used more than once in a chemical formula

• Parentheses are only used around polyatomic anions used more than once

Multiple Choice

What is the chemical formula for magnesium nitrate?

• MgNO₃

• Mg(NO₃)₂

• Mg₂(NO₃)

• Mg₃NO₂

Multiple Choice

The chemical formula for magnesium sulfate is

• Mg₂(SO₄)₂

• Mg₂SO₄

• Mg(SO₄)₂

• MgSO₄

Multiple Choice

The only polyatomic ion that is a cation is ammonium NH₄⁺. Would it come first or second in a chemical formula?

• First

• Second

Ammonium will always come first in a chemical formula because it's positive!

Examples:

Ammonium Chloride: NH₄Cl

Ammonium Sulfide: (NH₄)₂S

Multiple Choice

All polyatomic ions, other than ammonium, have a _________charge, so they will come ____________ when writing a chemical formula

• positive, first

• negative, second

Multiple Choice

What's the name of NaNO₃?

• sodium dioxide

• sodium nitrogen oxide

• sodium nitrate

• nitrate

Multiple Choice

What's the name of K₂SO₄?

• potassium sulfate

• potassium sulfite

• sodium sulfite

• potassium tetraoxide

Multiple Choice

What's the name of FePO₄?

• iron phosphate

• iron (II) phosphate

• iron (III) phosphate

• iron phosphide

Multiple Choice

What's the name of NH₄ClO₃?

• ammonium perchlorate

• ammonium chlorate

• ammonia chloride

• ammonia chlorite

Multiple Choice

What's the chemical formula for sodium sulfate?

• KSO₃

• NaSO₃

• Na₂SO₄

• NaSO₄

Multiple Choice

What's the chemical formula for potassium hydroxide?

• POH

• KOH

• KOH₂

• KO₂

Multiple Choice

What's the chemical formula for calcium carbonate?

• CaCO₃

• Ca₂CO₃

• Ca(CO₃)₂

• Ca₂(CO₃)₂

Multiple Choice

What's the chemical formula for copper (II) nitrite?

• CuNO₂

• CuNO

• Cu(NO₂)₂

• Cu₂NO₂