PHYSICAL VS. CHEMICAL CHANGE

YESTERDAY IN SCIENCE CLASS WE....

• We mixed phenol red with calcium chloride.
• When we mixed it, it turned hot.
• It also changed color.
• After this, we put baking soda in the mixture.
• This made it cool down and it made it foamy.

CHEMICAL CHANGE CONTINUED...

• The mixture was originally red.
• But when we mixed the baking soda, it turned yellow
• This is an example of chemical change.
• Another example of chemical change is:
• Mixing baking soda with vinegar

PHYSICAL CHANGE...

• In physical change, no new substance is created.
• It stays the same object, just changes form.
• Some examples of physical change are...
• Water boiling
• Ice melting

MORE EXAMPLES OF PHYSICAL CHANGE...

• Tearing paper towel
• Shredding paper
• Chopping wood
• And crushing a can

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