Courtney helped her mother brew some tea. They brewed the tea at high temperature, and then poured it into plastic bottles. They sealed the bottles containing the hot tea and then placed them into the refrigerator. After several hours, Courtney checked on the bottles in the refrigerator. She found that the sides of the bottles has caved in slightly. Why did this occur?

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1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

i thinking chemical change