Balancing Chemical Equations Concepts

Balancing Chemical Equations Concepts

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Sophia Harris

FREE Resource

The video tutorial explains how to balance the chemical equation Zn3P2 + H2O. It begins by counting the atoms on both sides of the equation, focusing on zinc, phosphorus, hydrogen, and oxygen. The tutorial then demonstrates how to balance these atoms step-by-step, emphasizing the importance of updating hydrogen counts and using parentheses correctly. The video concludes with a balanced equation and key tips for avoiding common mistakes.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial number of zinc atoms on the reactant side in the equation Zn3P2 + H2O?

1

4

3

2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

9

3

5

7

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What coefficient is placed in front of zinc hydroxide to balance the zinc atoms?

4

3

2

1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After balancing zinc, how many hydrogen atoms are there on the product side?

4

8

10

6

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What coefficient is used in front of PH3 to balance phosphorus atoms?

1

2

4

3

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many total hydrogen atoms are there after balancing phosphorus?

14

12

10

8

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

4

7

6

5

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