Question

1. sep plan an investigation you want to know how temperature affects the rate of diffusion. outline an investigation that would generate evidence to support a conclusion, and provide a prediction of the outcome. include simple materials, such as water and food coloring.

Explanation:

Step1: Identify materials

We will use three glasses of water (one cold, one room - temperature, one hot), food coloring, and droppers.

Step2: Set up the experiment

Fill each glass with water. Use droppers to add a few drops of food - coloring to each glass at the same time.

Step3: Observe and record

Observe how quickly the food - coloring spreads in each glass. Record the time it takes for the coloring to evenly distribute in each glass.

Step4: Prediction

We predict that the food - coloring will spread the fastest in the hot water and the slowest in the cold water because higher temperatures increase the kinetic energy of the water molecules, which in turn increases the rate of diffusion.

Answer:

Materials: three glasses of water (cold, room - temperature, hot), food coloring, droppers.
Experiment setup: Add food - coloring to each glass simultaneously.
Observation and recording: Note the time for even distribution of coloring.
Prediction: Fastest diffusion in hot water, slowest in cold water.