Unit 6 Practice Test Energy & Stoichiometry

Energy that is stored, and can be converted to other forms of energy in the future, is called ___

• potential energy

• kinetic energy

• heat

• hidden energy

Chemical energy, due to the position of the particles in a molecule, is a kind of ___

• kinetic energy

• radiation

• thermal energy

• potential energy

What type of energy transformation occurs when a piece of wood burns?

• Electrical energy is released as radiant energy

• Stored chemical energy is released as thermal energy

• Mechanical energy is stored as chemical energy

• No transformation occurs

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light
• Electrical to chemical
• Electrical to light
• Chemical to electrical

According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 

• destroyed, destroyed
• created, saved
• created, destroyed
• lost, found

Energy of motion is which type of energy?

• Potential
• Kinetic
• Sound
• Gravitational

Complete the following reaction equation so it is balanced:

C₂H₄ + 3 O₂ -->

• C₂O₂ + H₄

• CO₂ + H₂O

• CO + H

• 2 CO₂ + 2H₂O

Incomplete combustion is when there is a limited amount of oxygen.

• True
• False

What does incomplete combustion produce that complete combustion doesn't?

• Carbon monoxide
• Water
• blue flame

• Carbon dioxide

Complete combustion is when there is plenty of oxygen to react with. 

• True
• False