1. Given a sample of hydrochloric acid and three 5 gram samples of calcium carbonate that have varying degrees of surface area.

    2. 3 test tubes. One test tube has a large piece of calcium carbonate. One test tube has three smaller pieces of calcium carbonate. The third has several tiny pieces of calcium carbonate

    Which of these samples of calcium carbonate would react the fastest with the acid? After you come up with your hypothesis, follow the directions below to perform the experiment to test your hypothesis.

    Instructions:

    1. Click on any of the solids (large lumps, medium lumps or powder) to view the reaction in terms of particle collisions.
    2. The program can be reset by clicking on the stopper.

    This activity might not be viewable on your mobile device.Video segment. Assistance may be required.Rates of Reaction Surface Area

  2. Given a reaction at two temperatures

    Two beakers of liquid. One has a thermometer showing a low temperature. The other has a thermometer showing a high temperature

    Which of these reactions would occur the fastest, the one at a low temperature or the one at a high temperature? After you come up with your hypothesis, follow the directions below to perform the experiment to test your hypothesis.

    3. Instructions:

    1. Adjust the temperature of the water bath by rotating the dial. Clicking on the measuring cylinders starts the reaction.
    2. Reset by clicking the reset button on the water bath.

    This activity might not be viewable on your mobile device.Video segment. Assistance may be required.Rates of Reaction Temperature