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Chemistry PS1 4 Energy/Thermochemistry

Physical Science Safety Guidelines

Chemistry Safety

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Project Zero THINKING ROUTINE

Phenomenon--

-how can you explain the energy produced ?

What do you know before you see this source?

Thermite reaction with cannonballs Washington International School Science

How does it add to your knowledge?
What do you still need to know?

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Cannonball chemistry explained WIS Science

Energy in reactions:

  Exothermic and endothermic

  Energy-level diagrams

  Bond breaking/bond making

  Hess's Law

  Calorimetry

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HS PS1-4 Energy:

Develop a model to illustrate that the release or absorption of energy from a chemical reaction system
depends upon the changes in total bond energy.

Energy-level diagrams

Conservation of energy


Inquiry science
Printable activity
        Investigate/discovery ENERGY in Chemistry
       On-line activity
        Decide which you think is the best fuel? WIS
    hint: compare the enthalpies of combustion (heat of reaction with O2)

LAB activities follow all safety guidelines linked above
and in the activity
Lab #1--Heat of solution A Schmidt
Lab #2--Alcohol burner LAB Washington International School
Lab #3--Calorimetry and Hess's Law lab Washington International School
Lab #4 Endothermic reactions and examples WIS
Lab #5 Ethyne/acetylene as a fuel    Washington International School

      

EXTENSION material for the curious

--More about rockets and propulsion in space
Early rocket failures
extras: hydrogen as a fuel
 
Prior Knowledge/Preview
A basic introduction to energy in reactions Smithsonian Education Center
Energy-level diagrams WIS
 
Aerospace CONNECTIONS:
Applications and examples-
--rocket fuels and more-
The V-2 rocket fuel from 1940s Germany--using ethanol
The Goddard 1926 rocket, USA--using gasoline
The Space Shuttle--using liquid hydrogen
Launch of Apollo 11 50th anniversary video Smithsonian NASM
-the chemistry of fuels in the Goddard rocket, V-2, space-shuttle main engines and more
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Mars Thermos Flask activity NASA PD (for MS)

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Insulating material

Apollo on left                    Orion on right

Ablative shield for re-entry protection  NASA PD

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