Unit 5: What is Energy?

Ms.Liu

Biology

1/31/12

Atoms

• Smallest building blocks of life

• Everything is made up of atoms

Matter

What is matter?

• Anything with mass!

Energy

• The ability to do “work”

• Energy can be quantified (potential, kinetic energy)

• ENERGY IS STORED IN MATTER!

–Has the ability to “change” matter

Kinetic vs. Potential

• Kinetic energy = Energy based on the MOVEMENT of the object

• Potential energy = Energy based on the POSITION of the object

Energy or Matter?Atom

Energy or Matter?Kinetic…

Energy or Matter?Cooling effect

Energy or Matter?STEAK

Energy or Matter?Fire

Energy or Matter?Candy (glucose!)

Energy or Matter?Potential

Energy or Matter?Magnetic…

Energy or Matter?Horchata

Energy or Matter?Nuclear explosion!

Reactions

• Endothermic =

• Exothermic =

Extra Credit for Exam (+5)

• Create a comic strip:

1. Explains the transfer of energy in both an exo-and endo-thermic reactions

2. Must have at least 5 boxes

3. Name and period in the top right-hand corner

4. Due before next exam on Friday, Feb. 10th