Final Lesson on Balancing Equations

What is the first step in balancing the equation with calcium chloride and sodium phosphate?

• Balance the chlorine atoms first.

• Balance the oxygen atoms first.

• Balance the sodium atoms first.

• Balance the calcium atoms first.

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In a combustion reaction, which element should you balance last?

• Nitrogen

• Oxygen

• Hydrogen

• Carbon

How many oxygen atoms are needed on the left side to balance the combustion reaction?

• Seven

• Five

• Six

• Eight

When balancing the reaction with carbon monoxide and hydrogen, what is the first element to balance?

• Nitrogen

• Oxygen

• Carbon

• Hydrogen

In the reaction with ammonium nitrate, what adjustment is made to balance the oxygen atoms?

• Add more oxygen molecules.

• Decrease the number of nitrogen molecules.

• Increase the number of water molecules.

• Add more ammonium nitrate.