Balancing Chemical Equations Concepts

Balancing Chemical Equations Concepts

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Lucas Foster

FREE Resource

The video tutorial covers the process of balancing a chemical equation involving copper and nitric acid. It discusses the challenges of using trial and error and recommends methods like the algebraic and Redux methodologies. The instructor demonstrates the balancing process, highlighting the complexity of dealing with multiple atoms and polyatomic ions. The video concludes with a balanced equation and provides links to additional resources for further learning.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main chemical equation discussed in the video?

CU + HNO3 → C32 + N + H2O

CU + H2O → C32 + N + HNO3

CU + NO2 → C32 + N + H2O

CU + HNO3 → C32 + NO2 + H2O

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is recommended for balancing the given equation?

Trial and Error

Redux Methodology

Empirical Method

Graphical Method

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the initial focus when trying to balance the equation?

Balancing the copper atoms

Balancing the nitrogen atoms

Balancing the hydrogen atoms

Balancing the oxygen atoms

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why was the trial and error method found to be ineffective?

It required advanced tools

It was too time-consuming

It was not systematic

It was too simple

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the key realization that led to the successful balancing of the equation?

Adjusting the nitrogen atoms

Changing the copper coefficient

Re-evaluating the oxygen count

Doubling the hydrogen atoms

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many nitrogen atoms were balanced in the final equation?

Four

Six

Eight

Ten

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the final count of oxygen atoms in the balanced equation?

24

20

18

22

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