eggshells+and+vinegar+experiment

Constant Variables: size of beaker, amount of eggshells, amount and concentration of vinegar, interval between when data is collected input variable: the amount of crushing of eggshells output variable: how much gas can be produced in the smallest amount of time

Dependent variable: amount of gas independent variable: time

Method: 1. measure 3 grams of eggshells 2. measure 50 ml of 3.0M vinegar 3. Make sure your 50ml flask has a stopper with a glass tube connected to a plastic tube, and make sure this tube is in your measuring cylinder under water 4. pour the eggshells into a 50 ml flask. 5. add the vinegar and close the flask as quickly as you can, making sure the plastic tube stays in the measuring cylinder 6. every 30 seconds, measure the amount of gas which has been collected in the measuring cylinder, until you cannot measure any more gas
 * ~  ||~   ||~ amount of gas ||~   ||
 * = Time ||= Trial 1 (ml) ||= Trial 2 (ml) ||= Trial 3 (ml) ||
 * = 1 ||= 2 ||= 23 ||= 5 ||
 * = 2 ||= 4 ||= 34 ||= 10 ||
 * = 3 ||= 6 ||= 45 ||= 19 ||
 * = 4 ||= 9 ||=  ||= 26 ||
 * = 5 ||= 11 ||=  ||= 34 ||
 * = 6 ||= 13 ||=  ||= 42 ||
 * = 7 ||= 14 ||=  ||= 49 ||
 * = 8 ||= 18 ||=  ||= 58 ||
 * = 9 ||= 22 ||=  ||= 67 ||
 * = 10 ||= 27 ||=  ||= 74 ||
 * = 11 ||= 28 ||=  ||= 79 ||
 * = 12 ||= 30 ||=  ||= 83 ||