Chemical Changes in Matter

Discovery Activity (taken from textbook)

To be done at home with parental assistance

What Happens When Chemicals React?

1. Put on your safety goggles. Place 2 small spoonfuls of baking soda into a clear plastic cup.
2. Holding the cup over a large bowl or sink, add about 125 mL of vinegar. Swirl the cup gently.
3. Look at the material in the cup. What changes do you see? Feel the outside of the cup. What do you notice about the temperature?
4. Carefully fan the air above the liquid toward you. What do you smell?
   

Think It Over (answer below)
Observing What changes did you detect using your senses of smell and touch?