A student places a pan containing liquid cake batter into a hot oven. The student observes a chemical reaction when

A teacher mixes two liquids which are the same temperature together in a glass. The temperature rises. The change in temperature indicates

When observing a compost pile, one can tell that the materials have undergon a chemical change when

Which activity below does not represent a chemical change?

Which observation correctly identifies evidence of a chemical change?

A student placing an effervescent tablet into a liquid knows a chemical change has occurred if

Students add baking soda to a mixture. Which observation is evidence of a chemical change?

Which of the following is not a sign of a chemical change?

Which of the following is not a chemical change?

Which of the following is a chemical change?

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