Balancing Chemical Equations Concepts

Balancing Chemical Equations Concepts

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Jackson Turner

FREE Resource

In this video, Dr. B demonstrates how to balance the chemical equation for NaC2 plus H2O. The process involves counting the atoms on both sides of the equation and adjusting coefficients to ensure the same number of each type of atom is present on both sides. The video covers balancing hydrogen, oxygen, and sodium atoms, with a focus on making strategic adjustments to achieve a balanced equation. The tutorial concludes with a balanced equation and a summary of the steps taken.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in balancing a chemical equation?

Change the subscripts of the compounds.

Add coefficients randomly.

Remove elements to simplify.

Count the atoms of each element on both sides.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many sodium atoms are present initially on the reactant side?

Zero

Three

One

Two

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What change is made to balance the sodium atoms?

Add a coefficient of 2 to sodium hydroxide.

Add a coefficient of 3 to sodium chloride.

Add a coefficient of 2 to sodium chloride.

Add a coefficient of 3 to sodium hydroxide.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the total number of oxygen atoms on the product side after balancing sodium?

Five

Four

Six

Three

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you balance the hydrogen atoms in the equation?

Add a coefficient of 2 to water.

Add a coefficient of 3 to water.

Add a coefficient of 2 to sodium hydroxide.

Add a coefficient of 3 to sodium hydroxide.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the total number of hydrogen atoms on the reactant side after balancing?

Three

Four

Two

Five

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What adjustment is made to balance the chlorine atoms?

Add a coefficient of 2 to chlorine dioxide.

Add a coefficient of 3 to chlorine dioxide.

Add a coefficient of 2 to sodium chloride.

Add a coefficient of 3 to sodium chloride.

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