balance chemical equations
Authored by Fatima Dhaheri
Science
6th - 10th Grade
NGSS covered
Used 345+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Is the following equation balanced?
Al + O2 ---> 2Al2O3
YES
NO
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the number before a chemical formula called?
Example: 2H2 + O2 ---> 2H2O
Coefficient
Atom
Subscript
Equation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Balance this equation:
H2 + Cl2 ---> HCl
It is balanced.
H2 + Cl2 ---> 2HCl
3H2 + Cl2 ---> 6HCl
H2 + 3Cl2 ---> 6HCl
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Complete the sentence.
During a chemical reaction, atoms ________.
can appear
can disappear
get rearranged
stop moving and vibrating
Tags
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the Law of Conservation of Mass?
It states that matter cannot be created or destroyed.
It states that energy cannot be created or destroyed.
It states that matter can be created or destroyed.
It states that sound can be created or destroyed.
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H2
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
Tags
NGSS.MS-PS1-5
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