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When a physical change occurs… it does NOT change what the substance is!
Physical Changes
It only changes the physical appearance.
Then, what does it change?
When you change the •state of matter
What are three examples of Physical Changes?
• shape• mixing/
dissolving
When a chemical change occurs… a brand new substance is formed!
So, what aboutChemical Changes??
For example, mixing vinegar with baking soda will react (and chemically change) to make a salt, water, and carbon dioxide gas!
If there is a change in theodor (was odorless, now it smells)
What are five examples of Chemical Changes?
If there is a change in thecolor (colorless, and now it is
bright yellow)
Another example of a chemical change is
If there is a change in thetemperature (gets warm or
cold WITHOUT an outside source)
Actually any energy change
Another example of a chemical change is
When a solid forms after mixing 2 liquids… this is called a precipitate.
The last example of a chemical change is