Valentines Day Science Lab: Melting point of chocolates

I can across this on the Hershey website and thought it would be a fun activity for my class.

Materials:
- Milk chocolate chips
- White chocolate chips
- Dark chocolate chips
- Hot plate
- Bowls
- Stop watch

Objective: To see which type of chocolate will melt the fastest.

Have students make a prediction. You could make a graph as well.

Break class into groups.

Give each group one of each type of chocolate.

Have the groups put the chocolate in a bowl one at a time on the hot plate and time how long it takes to melt.

Have them record their observations.

Borax Crystal Heart

I want to make these with my class to hang in the window. This could be a great activity to use to teach about solutions.

Materials needed
-Borax
-Water
-Pipe cleaner
-Food coloring

How to:
1. Shape your pipe cleaner into the shape of a heart
2. Bring water to a boil and add your borax. You know you have enough borax when a little powder starts to collect at the bottom.
3. Add food coloring if you want
4. Place your heart into a container. Its best if it doesn't touch the sides or bottom of the container.  You can hang it in the container by suspending it with a pencil.
5. Pour the borax solution into the container, and make sure the heart is covered.