What makes your Rice Krispies pop?

Objective: design and carry out a scientific experiment

What makes your Rice Krispies pop?

Click the link above for a news story and video

Here are some of your guesses as to why Rice Krispies pop

Air bubbles
Any liquid with any viscosity will create the "snap, crackle, pop"
Jello or jam might be too heavy to hear the sound
Size effects how they pop
Shape effects how they pop
How stale they are
If there's a sugar coating, when the liquid dissolves it, the bubbles pop
Will a single Rice Krispie make a sound?
Different kinds of liquids will make different sounds (what happens if you use pond water)?

Here's what you used to make them pop

Apple Cider Vinegar
Skim Milk
Sugar
Water
Water and Vinegar
Milk and Water
Milk, Water and Vinegar

Turns out the reason why Rice Krispies pop is... watch the video and find out!

Homework: E block: read section 2.3 and answer questions 7-14
F block: write a hypothesis using "if...then..." and design a detailed experiment