Prepare 3 different cups of room temperature water.
Add ¼ cup of sugar into the first cup, stirring until it is dissolved. Into the second cup, add ¼ cup salt, stirring until dissolved.
Heat the remaining 3 cups of water until hot then pour them into three different cups.
Repeat step two.
Place one candy heart into each cup of water.
After two minutes, check the candy hearts and make note of which have changed.
Continue checking the candy hearts every 2 to 5 minutes, making note of the changes.
Discuss which liquids caused the candy hearts to dissolve faster/slower and why.