Mattie poured herself a glass of lemonade. The lemonade was warm, so Mattie put some ice in the glass. After 10 minutes, Mattie noticed that the ice was melting and the lemonade was

cold. Mattie wondered what made the lemonade get cold. She had three different ideas. Which idea do you think best explains why the lemonade got cold?

A)the coldness from the ice moved into the lemonade

B) the heat from the lemonade moved into the ice

C) the coldness and heat moved back and forth until the lemonade cold off

Explain your thinking Describe the "rule" or reasoning you used for your answer.