Everything around us is made of ___.

If a chemical reaction occurs what kind of change MUST happen?

EVERY chemical reaction produces ___ substances that are different than the substances that started the reaction.

Observable changes that indicate a chemical reaction occurred include 2 types. Name the 2 types.

Reactions that ABSORB energy and DECREASE temperature are called ____

Reactions that RELEASE energy and INCREASE temperature are called

If two chemicals are mixed together and BUBBLES are produced, what does this indicate?

Milk and Vinegar are mixed together. Small solids are produced. We call these solids ____

Is the melting of wax a chemical reaction?

The beginning temperature of a beaker of liquid is 86 degrees. Then another liquid is added and the temperature drops to 80 degrees. What kind of energy change is this?

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