Carbon TIMESystem & Scale Unit wrap-up and Post Test

Entry Task:

How would you identify if an unknown liquid will burn or not?

Second Warm UP:

Which atoms form HIGH ENERGY bonds together?

Which atoms form LOWER ENERGY bonds together?

Have Out

• Organic vs Inorganic Worksheet

• Explanation Tool for a different fuel (Propane or Butane)

With a neighbor

Compare your explanations for each of the 3 questions

Then, compare your overall explanations (back side of tool)

ProductsWater

Carbon Dioxide

Reactants

Propaneand Oxygen

6

Chemical change

C3H8 + 5 O2 --> 3 CO2 + 4 H2O

Propane burning

Heat and light energy

ProductsWater

Carbon Dioxide

Reactants

Butaneand Oxygen

7

Chemical change

C4H10 + 6.5 O2 --> 4 CO2 + 5 H2O

Butane burning

Heat and light energy

What about larger Molecules?

Complete an explanation for a larger molecules like

Octane

Or

Candle Wax (Paraffin)

ProductsWater

Carbon Dioxide

Reactants

Octaneand Oxygen

9

Chemical change

C8H18 + 12.5 O2 --> 8 CO2 + 9 H2O

Octane burning

Heat and light energy

ProductsWater

Carbon Dioxide

Reactants

Paraffinand Oxygen

10

Chemical change

C25H52 + 38 O2 --> 25 CO2 + 26 H2O

Candle burning

Heat and light energy

Homework• Review Atom Facts, Energy Facts and burning explanations

• Unit Test on Thursday 10/8