The moment the tablet<span> starts </span>dissolving<span> a chemical reaction occurs that </span>Some<span> factors can change how quickly the carbon dioxide gas is produced. Stir the ice cubes in the jar for about a </span>minute<span> so that the temperature evens out. </span> he tablets<span> effervesce, or fizz, when </span>dropped into water. Some<span> factors that influence the speed of a chemical reaction are: (1) Pour the </span>water<span> into 3 separate </span>glass<span> beakers. </span> When the solid<span> material has </span>completely<span> disappeared and the bubbles have vaneished. Stir for a </span>minute<span> or two so that it mixes in. </span> Hope this helped