Observations

As with any experiment, you must record your observations and draw conclusions.   We decided that if the liquid has bubbles (gas) then the hearts can float otherwise they will sink.  Some other interesting observations that we made:  The green hearts lost their color over time and the water turned green and it had a minty smell!  The other hearts did color the water, but the hearts themselves did not lose color.  And the strangest thing of all -  in all three liquids (water, vinegar, soda) the hearts over time were not hard anymore.  You could actually squish them between your fingers!

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