Chemical Balance Combustion

What is essential for a combustion reaction to begin?

• Carbon dioxide
• Fuel 
• Fuel, oxygen and heat
• Water and oxygen

Which of the following is a combustion reaction?

• 2H₂O → 2H₂ + O₂

• 2AgNO₃ + H₂S → Ag₂S + 2NHO₃

• 2Al + N₂ → 2AlN₄

• 4Fe + 3O₂ → 2Fe₂O₃

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

What must methane be combined with to undergo a combustion reaction?

• carbon dioxide

• energy

• oxygen

• hydrogen

When wood burns in the presences of oxygen, in what form is energy released?

• heat and light

• hydrogen

• water vapor

• more oxygen

Tags

NGSS.HS-PS3-4

Which of the following best explains why PbS + PbSO₄ ==> 2Pb + 2SO₂ is not a combustion reaction?

• Fuel is not a reactant.

• Molecular oxygen is not a product.

• Molecular oxygen is not a reactant.

• Fuel is not a product.

Which of the following is a balanced equation for the combustion of heptane (a hydrocarbon)?

• C₇H₁₆ + O₂ → 7CO₂ + 8H₂O

• C₇H₁₆ + 11O₂ → CO₂ + H₂O

• C₇H₁₆ + O₂ ==> CO₂ + H₂O

• C₇H₁₆ + 11O₂ → 7CO₂ + 8H₂O

Tags

NGSS.HS-PS1-7

What are the types of combustion?

• Complete & incomplete
• Incomplete & inexact
• Impossible & complete
• Computer & incompete

Another term for burning is

• Fire triangle
• Magnesium oxide
• Combustion
• Bustion

Is combustion a reversible reaction?

• Yes.
• No.

The word equation for combustion is: fuel + oxygen --> water + ________ __________

• Carbon dioxide
• Limewater

Tags

NGSS.MS-PS1-5