1. LecturePLUS Timberlake
Diffusion
Movement of molecules from an area of higher concentration to an area of lower concentration.
What happens when you spill milk on a table?
Other examples:
O2 and CO2 moving into and out of an animal cell
O2 and CO2 moving into and out of a plant cell
Osmosis is a special type of diffusion
LecturePLUS Timberlake

2. LecturePLUS Timberlake
Variables
Independent Variable
The manipulated variable
The variable you change during the experiment
Dependent Variable
The responding variable
The variable that is observed during the experiment
Constant variables
Variables that don’t change in an experiment
LecturePLUS Timberlake

3. LecturePLUS Timberlake
Charle’s Law:
What is the independent variable?
Temperature (x axis)
What is the dependent variable?
Volume (y axis)
What are (is) the constant variable(s)?
Pressure
LecturePLUS Timberlake