Oxidation Numbers and Ionic Charges

Oxidation Numbers and Ionic Charges

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Emma Peterson

FREE Resource

The video tutorial explains how to determine oxidation numbers for elements in ammonium nitrate (NH4NO3). It begins by discussing the rules for oxidation numbers in neutral molecules and ions. The tutorial then calculates the oxidation number for nitrogen in the ammonium ion (NH4) and the nitrate ion (NO3), showing that nitrogen has different oxidation numbers in each ion due to its bonding with hydrogen and oxygen, respectively. The video concludes with a summary of the oxidation numbers for each element in NH4NO3.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sum of oxidation numbers in a neutral molecule?

It is always positive.

It is always zero.

It is always negative.

It equals the charge of the molecule.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the charge of the ammonium ion?

Minus one

Plus two

Plus one

Zero

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the oxidation number of the nitrate ion?

Minus two

Plus two

Minus one

Plus one

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many hydrogen atoms are bonded to nitrogen in the ammonium ion?

Five

Four

Two

Three

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the oxidation number of nitrogen in the ammonium ion?

Minus five

Plus three

Minus three

Plus five

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the oxidation number of oxygen in most compounds?

Minus one

Zero

Minus two

Plus two

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the oxidation number of nitrogen in the nitrate ion?

Minus five

Plus five

Plus three

Minus three

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