Valentine's conversation hearts have so many uses this time of year. We have used them in multiple ways over the years. This year we tried a candy hearts science experiment!
Materials:
- Conversation hearts
- Clear cups
- Various liquids
For our liquids we used things we already had at home: water, Coke Zero, vinegar, and apple juice. Before we started, I asked the question, "Which liquid do you think will dissolve the candy heart the quickest?" We placed 5 conversation hearts in each cup and observed what happened immediately and over time.
Immediately we noticed that the hearts sank in every substance, except the Coke Zero (actually 1 sank, 4 floated). They started fizzing in Coke Zero immediately.
We checked the conversation hearts after one hour and again after two hours. Most had risen by that point! Such a fun way to discuss solubility! There's lots of printables online you can find to do this in your classroom and we could have used one at home. I chose not to for this activity since it was just me and my son doing it. We just talked about what we were observing throughout the process instead! 
Other ways we've used candy hearts in the past:
- Sorting by color
- Sorting by first letter
- Graphing
- Fine motor skills
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