Balancing Chemical Equations and Reactions

Balancing Chemical Equations and Reactions

Assessment

Interactive Video

Chemistry, Science

9th - 12th Grade

Hard

Created by

Lucas Foster

FREE Resource

The video tutorial explains how to balance a chemical equation involving ferric oxide and sulfuric acid, resulting in ferric sulfate and water. It highlights the confusion caused by the sulfate group and suggests treating it as a single unit to simplify the balancing process. The tutorial uses substitution to represent the sulfate group, making it easier to balance the equation by focusing on individual elements like iron, oxygen, and hydrogen. The video concludes with a balanced equation and a recap of the steps taken.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the products formed when ferric oxide reacts with sulfuric acid?

Sulfuric acid and oxygen

Iron sulfate and hydrogen

Ferric sulfate and water

Iron and sulfur dioxide

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why might balancing the equation be confusing initially?

Because of the presence of multiple iron atoms

Due to the complex nature of water molecules

Because the sulfate group complicates the oxygen count

Due to the presence of hydrogen gas

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What strategy is suggested for dealing with the sulfate group?

Ignore the sulfate group entirely

Treat the sulfate group as a single unit

Balance the sulfate group first

Replace sulfate with water

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the substitution method, what does 'x' represent?

An oxygen atom

A hydrogen molecule

An iron atom

A sulfate group

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many iron atoms are present on each side of the balanced equation?

Four

One

Two

Three

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many water molecules are needed to balance the oxygen atoms?

Four

Three

Two

One

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many hydrogen atoms are present in three molecules of sulfuric acid?

Eight

Six

Four

Two

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