TE 401 Lesson Plans: Fall, 1997 s2

Name: ______Class: ______Date: ______4.3 Evidence-Based Arguments Tool: What Happens to Ethanol When it Burns? Think about your ethanol investigations. Complete this tool with patterns from class evidence, conclusions, and unanswered questions.

Carbon: Transformations in Matter and Energy Environmental Literacy Project Michigan State University

Systems and Scale Unit, Activity 4.3 Class Evidence Conclusions Unanswered Questions What patterns did we find in our class What can we conclude about each of the What do we still need to know in order to evidence about each of the Three Questions? Three Questions using this evidence? answer each of the Three Questions? Wess R: The mass changed once Wess R: The atoms are moving because Wess R: Where are most of the atoms weighed on scale there was a change in mass going?

Chase C: Ethanol lost mass Chase C: Atoms are moving from the Chase C: Was just carbon moving or ethanol to the air other atoms? Janine R: Fire, condensation, change of BBT Janine R: Atoms are breaking from Janine R: Why does energy change? ethanol and changing into heat energy. What is condensed? CO2 is going into BBT Wess R: CO2 is being released from the Wess R: The carbon atoms are being Wess R: How much dioxide is being flame released into air as flame and light released?

Chase C: The BTB turned from blue to Chase C: Carbon atoms move from the Chase C: Did the BTB gain mass? Was green to yellow ethanol to the air carbon the only thing that left the ethanol? Janine R: Fire, change of BBT Janine R: Carbon atoms are leaving the ethanol, changing into CO2 and going Janine R: How does this happen? Why into the BBT does BBT change color? Wess R: A flame and light is formed Wess R: The chemical energy turns into Wess R: What about sound? the flame and light Chase C: Heat + light were produced Chase C: How much energy was Chase C: Chemical energy is released released? From which bonds was energy Janine R: Fire, light, heat. from the bonds in the ethanol released?

Janine R: The bonds are changing into Janine R: Why does this happen? What heat and light energy are bonds made of?