Balancing and Classifying Reactions

Is the following equation balanced or unbalanced?
Fe + S --> FeS

• balanced

• unbalanced

Tags

NGSS.MS-PS1-5

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2

• 6

• 1

• 4

Tags

NGSS.MS-PS1-1

What are the correct coefficients for the reaction below?
_C₄H₁₀ + _O₂ → _CO₂ + _H₂O

• 4, 26, 16, 20

• 2, 13, 8, 10

• 1, 6.5, 4, 5

• 2, 8, 13, 10

Tags

NGSS.MS-PS1-5

The large number in front of a chemical formula or compound is the ___________. 

• coefficient

• product

• physical

• chemical

Is the following equation balanced?

• YES

• NO

Tags

NGSS.MS-PS1-5

Which of the following equations are correctly balanced?

• 12CO₂ + H₂O ---> C₆H₁₂O₆ + O₂

• CO₂ + H₂O ---> 3C₆H₁₂O₆ + O₂

• CO₂ + 9H₂O ---> C₆H₁₂O₆ + O₂

• 6CO₂ + 6H₂O ---> C₆H₁₂O₆ + 6O₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Balance this equation: H₂ + Cl₂ ---> HCl

• It is balanced.

• H₂ + Cl₂ ---> 2HCl

• 3H₂ + Cl₂ ---> 6HCl

• H₂ + 3Cl₂ ---> 6HCl

Tags

NGSS.MS-PS1-5

What is the right ratio of chemicals for the balanced chemical equation?

__H₂ + __S --> __H₂S

• 1,1 --> 1

• 2,2 --> 2

• 1,2 --> 1

• 1,2 --> 2

Tags

NGSS.MS-PS1-5

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

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

What reaction has the following general formula:

A + CD --> C + AD

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion