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Balancing Chemical Equations Concepts

Balancing Chemical Equations Concepts

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Practice Problem

Hard

Created by

Amelia Wright

Used 1+ times

FREE Resource

In this video, Dr. B demonstrates how to balance the chemical equation for barium chloride (BaCl2) and phosphoric acid (H3PO4). The process begins with counting the atoms on both sides of the equation. A trick is introduced to simplify balancing by treating polyatomic ions as single units. The video then guides viewers through the step-by-step process of balancing the equation, ensuring that the number of each type of atom is equal on both sides. The video concludes with a confirmation of the balanced equation and highlights the efficiency of using the polyatomic ion trick.

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial number of chlorine atoms in the equation before balancing?

1

4

3

2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it beneficial to treat polyatomic ions as a single unit when balancing equations?

It changes the chemical properties.

It reduces the number of steps needed.

It increases the number of atoms.

It makes the equation more complex.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What coefficient is placed in front of BaCl2 to balance the barium atoms?

1

4

2

3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many hydrogen atoms are present after balancing the equation?

2

4

6

8

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the coefficient for HCl after balancing the equation?

4

2

8

6

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final step in verifying the balanced equation?

Measuring the temperature change.

Counting the total number of atoms on each side.

Checking the color of the solution.

Ensuring the equation is symmetrical.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main advantage of treating phosphate as a single unit?

It increases the number of products.

It changes the reaction speed.

It simplifies the balancing process.

It alters the chemical formula.

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