
Chemical Reactions and Moles
Interactive Video
•
Chemistry, Science, Physics
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main focus of the video tutorial?
Learning about chemical reactions
Understanding the periodic table
Using moles to balance equations
Studying atomic structure
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the 'B' in the BUGS method stand for?
Build
Break
Box
Balance
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which two elements are involved in the example reaction?
Oxygen and nitrogen
Copper and hydrogen
Hydrogen and nitrogen
Copper and oxygen
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass (Mr) of copper used in the calculations?
32
16
1.6
63.5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many moles of copper are calculated from 6.35 grams?
1.6 moles
0.1 moles
0.05 moles
63.5 moles
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to show calculations in an exam?
To save time
To demonstrate understanding
To confuse the examiner
To avoid mistakes
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the atomic mass of oxygen used in the example?
8
16
64
32
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