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Chemical Reactions & Equations Review

Authored by Keri Lehman

Chemistry

9th Grade

NGSS covered

Used 6+ times

Chemical Reactions & Equations Review
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35 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is a coefficient?

The small number on the right of the chemical symbol.
The large number in front of a chemical formula.
The number in between the chemical symbols.
The number behind a chemical formula.

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the part of the chemical equation in green called? 
Fe + S --> FeS

products
reactants
yield
chemical formula

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the little number after an element in a chemical equation called.
Example: H2

Coefficient 
Subscript
Atom
Equation

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 

1
2
3
4

Tags

NGSS.MS-PS1-5

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which problem is balanced?
(Check ALL answers)

PbO2 + 2H2
SO2 + H20 --> H2SO4
2Na + 2H2O --> 2NaOH + H2

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

1
2
3
4

Tags

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Is this balanced?
Al + O2 → 2Al2O3

Yes
No

Tags

NGSS.MS-PS1-5

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