Oxidation Numbers and Compounds

Oxidation Numbers and Compounds

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Practice Problem

Hard

Created by

Sophia Harris

FREE Resource

The video tutorial explains how to determine the oxidation numbers for each element in the compound H4SiO4. It begins by noting that the compound is neutral, meaning the sum of oxidation numbers must equal zero. The oxidation number for hydrogen is +1, while oxygen is typically -2. Silicon's oxidation number is unknown and represented as X. An equation is set up to solve for X, resulting in silicon having an oxidation number of +4. The tutorial concludes with a summary of the oxidation states for each element in H4SiO4.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the overall charge of the compound H4SiO4?

Variable

Positive

Neutral

Negative

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When hydrogen is bonded to non-metals, what is its typical oxidation number?

-1

0

+1

+2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the oxidation number of oxygen in most compounds?

+1

-1

-2

+2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the compound H4SiO4, how many oxygen atoms are present?

5

2

3

4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unknown variable used to represent silicon's oxidation number in the equation?

Z

Y

X

W

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the oxidation number of silicon in H4SiO4 after solving the equation?

+3

+4

+5

+2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

0

+2

+1

-1

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