# Scientific Method( Diffusion Lab)

Topics: Energy, Temperature, Concentration Pages: 3 (713 words) Published: April 17, 2013
Experiment: At this experiment we are investigating does the temperature affect how quickly the particles diffuse to an even concentration throughout the water, we are going to do this experiment by using food coloring to see how quick the food coloring diffuse in hot water and cold water.

Materials:
• • • • • • • • One beaker Hot plate Ice Water Food coloring Thermometer Timer Eye dropper

Hypothesis:I think the food coloring will spread faster, because the particle in the hot water have more kinetic energy than the cold water, so it will spread faster. Particles at a higher temperature are moving faster than particles at a lower temperature, that is one of the law in particle theory. It spread slower in cold water, because the particles is moving slower than the hot water, when the water cool down the particles start to lost kinetic energy and they slowly clump together and vibrate. Procedure: First gather all the materials we need for the experiment, then pour 40ml cold water into the beaker. Wait for the temperature even out, then measure and record the temperature. After that use the eye dropper to collect some food coloring drip 4 drops into the beaker, record the amount of time needed for the food coloring to reach an even concentration throughout the cold water beaker. After the food coloring reach an even concentration, write what much time it takes to reach that. Next empty the beaker and add 40ml room temperature water from the tap into the beaker. Measure and record the temperature. Repeat the steps where we start using the eye dropper to drip 4 drops of food coloring into the beaker to where the food coloring spread evenly. Empty the beaker and heat up some water on the hot plate at level 2. After ﬁve minutes of heating on the hot plate, pour 40ml of hot water into a beaker. Repeat the steps where we start using the eye dropper to drip 4 drops of food coloring into the beaker to where the food coloring spread evenly. Last step, empty the beaker...