What do both sides of a chemical equation have to have to make a balanced equation?
The same number of _____ of each element on both sides of the yield arrow.
EDTECH Worked Example
Interactive Video
•
Science
•
9th - 12th Grade
•
Hard
Madison Lowe
FREE Resource
6 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
What do both sides of a chemical equation have to have to make a balanced equation?
The same number of _____ of each element on both sides of the yield arrow.
Answer explanation
Because the Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction, there must be the same number of atoms of each element in reatants and the products.
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Balance the chemical equation:
Al₂O₃ --> Al + O₂
Al₂O₃ --> Al + O₂
2Al₂O₃ --> 2Al +2 O₂
2Al₂O₃ --> 4Al + 3O₂
2Al₂O₃ --> 2Al + 5O₂
Answer explanation
2Al₂O₃ --> 4Al + 3O₂ is correct.
On our reactants side, we have:
(2 * 2) = 4 Al atoms
(2* 3) = 6 O atoms
On our product side, we have:
(4 * 1) = 4 Al atoms
(3*2) = 6 O atoms
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Balance the chemcial equation:
Fe + Cl₂ ---> FeCl₃
2Fe + 3Cl₂ ---> 2FeCl₃
Fe + Cl₂ ---> FeCl₃
Fe + 2Cl₂ ---> 2FeCl₃
4Fe + 7Cl₂ ---> 4FeCl₃
Answer explanation
2Fe + 3Cl₂ ---> 2FeCl₃
On our reactants side, we have:
(2 * 1) = 2 Fe atoms
(3 * 2) = 6 Cl atoms
On our product side, we have:
(2 * 1) = 2 Fe atoms
(2 * 3) = 6 Cl atoms
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Balance the chemical equation:
N₂ + H₂ ---> NH₃
3N₂ + 3H₂ ---> 2NH₃
N₂ + H₂ ---> NH₃
2N₂ + 3H₂ ---> 4NH₃
N₂ + 3H₂ ---> 2NH₃
Answer explanation
N₂ + 3H₂ ---> 2NH₃
On our reactants side, we have:
(1 * 2) = 4 N atoms
(3 * 2) = 6 H atoms
On our product side, we have:
(2 * 1) = 2 N atoms
(2 * 3) = 6 H atoms
5.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
While the GED is a timed test, we are still learning and practicing here. Did you feel like you had enough time to answer each question?
Yes
I had enough time to answer most questions
I didn't have enough time to answer most questions
6.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
How comfortable do you feel about the topics in this video lesson?
Very confident and comfortable!
I feel comfortable and got most of the questions right
I need more practice
I did not understand and did not do well on the questions
7 questions
Balancing Chemical Equations
Interactive video
•
9th - 10th Grade
6 questions
Decomposition Reactions in Chemistry
Interactive video
•
9th - 10th Grade
6 questions
Enthalpy from Bond Energy Video
Interactive video
•
9th - 12th Grade
8 questions
Balancing Chemical Equations Concepts
Interactive video
•
9th - 10th Grade
11 questions
Balancing Chemical Equations: An Introduction
Interactive video
•
9th - 12th Grade
6 questions
Chemical Reactions and Safety Measures
Interactive video
•
9th - 12th Grade
6 questions
Balancing Iron and Oxygen Reactions
Interactive video
•
9th - 10th Grade
8 questions
Balancing Chemical Equations Concepts
Interactive video
•
9th - 10th Grade
25 questions
Equations of Circles
Quiz
•
10th - 11th Grade
30 questions
Week 5 Memory Builder 1 (Multiplication and Division Facts)
Quiz
•
9th Grade
33 questions
Unit 3 Summative - Summer School: Immune System
Quiz
•
10th Grade
10 questions
Writing and Identifying Ratios Practice
Quiz
•
5th - 6th Grade
36 questions
Prime and Composite Numbers
Quiz
•
5th Grade
14 questions
Exterior and Interior angles of Polygons
Quiz
•
8th Grade
37 questions
Camp Re-cap Week 1 (no regression)
Quiz
•
9th - 12th Grade
46 questions
Biology Semester 1 Review
Quiz
•
10th Grade
25 questions
Equations of Circles
Quiz
•
10th - 11th Grade
30 questions
Week 5 Memory Builder 1 (Multiplication and Division Facts)
Quiz
•
9th Grade
33 questions
Unit 3 Summative - Summer School: Immune System
Quiz
•
10th Grade
37 questions
Camp Re-cap Week 1 (no regression)
Quiz
•
9th - 12th Grade
46 questions
Biology Semester 1 Review
Quiz
•
10th Grade