Balancing Chemical Equations

Balancing Chemical Equations

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Olivia Brooks

FREE Resource

The video tutorial explains how to balance a combustion reaction involving C3H4 and O2, resulting in CO2 and H2O. It begins by counting the atoms on both sides of the equation, then proceeds to balance the carbon, hydrogen, and oxygen atoms step by step. The tutorial concludes with the final balanced equation, ensuring that the number of atoms for each element is equal on both sides.

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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the initial counts of carbon, hydrogen, and oxygen atoms on the reactant side of the equation?

3 carbons, 2 hydrogens, 4 oxygens

1 carbon, 2 hydrogens, 3 oxygens

2 carbons, 4 hydrogens, 3 oxygens

3 carbons, 4 hydrogens, 2 oxygens

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many carbon atoms are present on the product side before balancing?

Three

One

Two

Four

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What coefficient is placed in front of CO2 to balance the carbon atoms?

1

3

4

2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After balancing carbon, how many total oxygen atoms are on the product side?

6

5

8

7

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What coefficient is used in front of H2O to balance the hydrogen atoms?

1

2

3

4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many hydrogen atoms are there on the product side after balancing?

Two

Four

Eight

Six

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final coefficient placed in front of O2 to balance the equation?

2

3

5

4

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the balanced chemical equation for the combustion of C3H4?

C3H4 + 4O2 → 2CO2 + 3H2O

C3H4 + 5O2 → 3CO2 + 4H2O

C3H4 + 3O2 → 3CO2 + 2H2O

C3H4 + 4O2 → 3CO2 + 2H2O