Balancing Combustion Reactions

Balancing Combustion Reactions

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Sophia Harris

FREE Resource

The video tutorial explains how to balance a combustion reaction equation involving C5H10O2 and O2. It begins by counting the atoms on both sides of the equation and suggests leaving oxygen balancing for last. The tutorial demonstrates balancing carbon and hydrogen atoms first, then adjusting the oxygen count. It introduces the use of fractions to balance equations and shows how to convert them to whole numbers by multiplying all coefficients. The video concludes with a summary of the balanced equation and thanks to a viewer.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial number of oxygen atoms on the reactant side in the combustion reaction of C5H10O2?

2

4

6

8

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in balancing a combustion reaction according to the video?

Balance the carbon atoms first

Balance the oxygen atoms first

Balance the entire equation at once

Balance the hydrogen atoms first

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

13

14

12

11

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What coefficient is used for water to balance the hydrogen atoms in the reaction?

4

3

5

6

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What fractional coefficient is initially used for O2 to balance the oxygen atoms?

13/2

14/2

12/2

11/2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you convert fractional coefficients to whole numbers in a balanced equation?

Subtract 1 from each coefficient

Divide each coefficient by 2

Add 1 to each coefficient

Multiply each coefficient by 2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the whole number coefficient for O2 after conversion?

14

11

13

12

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