Balancing Chemical Equations Quiz

What is the purpose of balancing a chemical equation?

• To change the compounds involved

• To conserve mass

• To remove elements

• To predict products

The Law of Conservation of Mass states:

• Energy can be created

• Mass cannot be created or destroyed

• Atoms can change types

• Mass can disappear

In the equation , which element is unbalanced?

• Hydrogen

• Nitrogen

• Oxygen

• Carbon

What should you adjust to balance an equation?

• Subscripts

• Coefficients

• Elements

• Compounds

In balancing , the coefficient of is:

• 1

• 3

• 4

• 2

What does the periodic table provide about each element?

• Temperature

• Atomic mass

• Reactions

• Compounds

In the unbalanced reaction , what element should be balanced last?

• Carbon

• Oxygen

• Nitrogen

• Hydrogen

Which is the correct balanced form of ?

To balance , how many are needed?

• 1

• 2

• 4

• 5

Which element in is diatomic?

• Oxygen

• Hydrogen

• Both

• Neither