Title: Science Investigative Project

Hypothesis: The higher the temperature the higher the rate of diffusion.

Aim: This investigation aims to find out how the rate of diffusion is affected by temperature by placing teabags into cups of water of varying temperatures and analyzing the concentration of tea molecules in each cup.

Materials used:

3 similar cups

Ice water, water in room temperature, boiling water

3 teabags

3 Thermometers

Experimental procedure:

1) Prepare 3 similar transparent cups containing ice water, water at room temperature and boiling water.

2) Place a thermometer in each cup.

3) Slowly lower a teabag in the center of each cup.

4) Count 10 seconds and remove the teabags.

5) Look at the three cups and see how much tea has spread in the cup.

6) Record the findings and draw a conclusion.

*Look for the cup with the highest concentration of tea molecules.

7) Find out why this is so and explain.

Independent variable: The temperature of the water in each cup

Dependent variable: The concentration of tea molecules in each cup at the end of the experiment.

Constant variables:

1) The type of cup used

2) The type of teabag.

3) The temperature of the teabag.

4) The position at which the teabag is released.

5) The volume of water

Table of observations: (sorry the borders disappeared when i copy and paste it over, please refer to the hard copy research plan submitted)

	Concentration of tea molecules(high/low)	Colour (Dark/light)	Other observations (Thick, cloudy)
Ice water Temperature:
Water at room temperature Temperature:
Boiling water Temperature: