Cory wants to do an experiment to confirm that matter is conserved during a chemical reaction. He decides to use the reaction of baking soda and vinegar. When added together, the two substances foam and bubble. Cory gathers the following equipment: a scale to measure masses a large flask in which to mix the vinegar and baking soda vinegar baking soda a lab book and pen What does Cory still need in order to do his experiment? A. a hot plate B. a way to measure the volume of liquids C. a way to calculate how much baking soda to use D. a way to capture and measure gas