The Engine
Gasoline engines require this for energy input.
What is a spark plug?
The glass marble represented this.
The metal and magnet marbles represented this.
What is air and fuel?
Sufficient energy is needed to do this.
Bonds store different amounts of this in their bonds.
What is energy?
This states that energy cannot be created nor destroyed, only transferred.
What is the law of conservation of energy?
Diesel engines require this for energy input.
Compressed air.
Explain how the energy of the glass marble changed over time.
What is the marble has kinetic energy from the ramp which was transferred to the metal/magnet marble?
When there is not sufficient energy, this happens to the bond.
What is wobble?
This is the most common way energy is released to the surroundings.
What is heat?
List the inputs and outputs of a combustion reaction and characterize it as either exothermic or endothermic.
What are fuel/oxygen, water/carbon dioxide, and exothermic?
The marble model represented this in the car.
What is the cylinder/piston system?
The ramp represented what in the cylinder system of a gasoline engine?
What is the spark plug?
If an engine did not have enough energy to break the fuel bonds, this would happen.
What is backfire or misfire?
This reaction releases heat to the surroundings and the reactants have more energy than the products.
What is exothermic?
This type of reaction has a large activation energy.
What is endothermic?
Energy is needed in the engine to do this.
What is break fuel bonds?
When the glass marble had enough energy the bond ___________.
What is broke?
When bonds form, energy is ___________. There is ______ energy in the system; it is ________ stable.
What is released, less, more?
This reaction absorbs energy from the surroundings and the products have more energy than the reactants.
What is endothermic?
When a bond breaks, _______ is required. Any excess _______ dissipates into the environment as ________.
What is energy, energy, heat?
Fuel or _______ is converted into ________ which moves the car, which is an example of _________.
What is matter, energy, and force?
When the glass marble did not have enough energy, the bond __________.
What is wobble?
Energy is released to the system in this form.
What is heat?
This is the minimum amount of energy needed for reactant particles to collide and react.
What is activation energy?
In the lab, this reaction was exothermic.
What is baking soda and calcium chloride?