Naming and Deducing Ionic Compound Formulae

Naming and Deducing Ionic Compound Formulae

Assessment

Interactive Video

Chemistry

6th - 10th Grade

Practice Problem

Hard

Created by

Mia Campbell

Used 4+ times

FREE Resource

This video tutorial covers the naming and formula deduction of ionic compounds, focusing on polyatomic ions. It begins with a review of monatomic ions and introduces polyatomic ions, such as hydroxide, sulfate, and nitrate. The tutorial provides examples, including sodium nitrate and magnesium hydroxide, demonstrating the crisscross method for balancing charges. It emphasizes the importance of using brackets in formulas and offers a practice problem with potassium sulfate. The video concludes with a discussion on transition metals, highlighting the need to specify valency using Roman numerals.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a monatomic ion?

An ion made of one atom

An ion made of multiple atoms

A neutral molecule

A compound with no charge

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a polyatomic ion?

Hydroxide ion

Magnesium ion

Sodium ion

Chloride ion

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the charge of the sulfate ion?

-1

-2

+1

+2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct formula for sodium nitrate?

Na2NO3

Na2N

NaNO2

NaNO3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you name an ionic compound made from polyatomic ions?

By using the names of the ions as they are

By using the Latin name of the metal

By adding a prefix to the name

By changing the suffix to -ide

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct formula for magnesium hydroxide?

MgOH

MgOH2

Mg(OH)2

Mg2OH

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do we use brackets in the formula for magnesium hydroxide?

To indicate the number of magnesium ions

To separate the elements

To show the structure of the hydroxide ion

To balance the charge of the compound

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