jill is doing a science experiment. after she mixes some baking soda into some
vinegar she notices a lot of bubbles and the volume in the beaker is now higher.
which of the following indicates a chemical reaction has occurred ?
a. there was an increase in volume in the beaker
b. science experiments always cause chemical reactions
c. the bubbles indicate a new gas was produced.
d. only explosions are considered chemical reactions.
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