Membrane Transport: Rate of Diffusion Experiment

Vocabulary flashcards covering key terms, concepts, target parameters, and experimental data from Laboratory No. 1 on the Rate of Diffusion.

Diffusion

The passive, random movement of particles, such as atoms or molecules, from an area of higher concentration to an area of lower concentration.

Brownian Motion

The random motion of particles within a fluid that serves as the underlying cause of diffusion.

Passive Process

A cellular or physical process, such as diffusion, that does not require energy input from the cell.

Rate of Diffusion

The speed at which particles move and spread throughout a medium.

Kinetic Molecular Theory

A theory heavily applied to gases and other matter stating that as temperature increases, the molecular kinetic energy and the speed of particle movement also increase.

Target Cold Water Temperature

Approximately $4^\times\text{C}$, prepared by adding ice to distilled water and stirring until reaching the specified target.

Target Normal Water Temperature

Approximately $22^\circ\text{C}$, achieved by allowing distilled water to sit at room temperature.

Target Hot Water Temperature

Approximately $70^\circ\text{C}$, achieved by heating distilled water on a hot plate.

Cold Water Trial 1 Result

At an observed water temperature of $19^\circ\text{C}$, the diffusion time recorded was $268.65\,\text{s}$.

Normal Water Trial 1 Result

At an observed water temperature of $29^\circ\text{C}$, the diffusion time recorded was $172.79\,\text{s}$.

Hot Water Trial 1 Result

At an observed water temperature of $73^\circ\text{C}$, the diffusion time recorded was $41.38\,\text{s}$.

Corning PC-400D

The model of hot plate used for heating the water beaker during the laboratory activity.