Answer:
Here's ya idea: Can the food we eat affect our heart rate?
Explanation:
Answer:The answers are on the attachments.
Each volumn is different and therefore has a specific and unique mass.
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When popcorn is popped, liquid inside the kernel is changed to steam. Pressure from the steam builds up inside the kernel. When the pressure reached a critical stage the kernel pops turning itself inside out. This is a physical change.
