Video: Brainpop

What is diffusion?

• Diffusion- the movement of particles from high concentration to low concentration.

• Diffusion can happen in any of the four states of matter (Solids, Liquids, Gases, and Plasmas)

• All states of matter are constantly moving (even in solids)

• Particles are randomly moving and colliding.

• The constant random motion is why aromas can travel through the air.

Diffusion occurs all by itself! It does not need help!

NO ENERGY IS NEEDED FOR DIFFUSION TO OCCUR.NO ENERGY IS NEEDED FOR DIFFUSION TO OCCUR.

Diffusion also known as Passive Transport

Dynamic Equilibrium

• The point at which no futher change can happen because all part are equally concentrated.

Diffusion• Occurs in our cells at the plasma

membrane. (Oxygen, water, nutrients, carbon dioxide, waste)

How do our bodies use diffusion to stay alive?

• The cells in our bodies use diffusion to help them get nutrients and substances needed to stay alive like oxygen.

Activity

• Rough Draft of Poster

• Final Draft Colorful Poster Due Wed- 12/10

Examine Picture Where is there a high concentration ofoxygen?

Where is there a low concentration of oxygen?

How does diffusion work in our bodies?

SummaryWhere is there a high concentration ofoxygen?

Where is there a low concentration of oxygen?

How does diffusion work in our bodies?

Diffusion helps oxygen and other necessary materials move from our blood into our cells through the plasma membrane.

HW

• Edhelper: Diffusion

Aim: How do we complete our lab on diffusion through a

plasma membrane?

• Do Now:

• Definition: Substances moving from areas of high concentration to low concentration WITHOUT energy.

• Give an example of diffusion.

Directions/Day 1 of Lab

Group Work Lab Completion

Poster• With a partner create a poster with the following criteria• 1) a definition• 2) a written example of diffusion in our world.• 3) a visual example of diffusion in our world.• 4) how diffusion works in our bodies.

• Vocab to use: diffusion, passive transport, plasma membrane, low concentration, high concentration, equilibrium

• * Due by the end of 1st period.

Aim: How do we practice answering Regents Questions

on the state diffusion lab?

• Do Now:

• Complete typing your lab report. You will have 20 minutes.

Regents Questions Worksheet

• Write your answers on the separate answer sheet.