physical or chemical changes

2. What is the difference?
A physical changes can be reversed.
Water can change to a gas, to a solid and back to
water. This is an example of physical change.

3. Physical change can change shapes
A tree to a baseball bat is a physical change,
because it remains wood.

4. Chemical change
When wood burns it goes through a chemical
change.

5. Is this a Chemical change?
This is an example of a chemical change, as it would be very
difficult to get back to original forms

6. What happens when bread is toasted?
This is another example of a chemical change.
We cannot undo the toast.

7. Is changing clay to pots a physical or
chemical change?
If you said physical you are correct. It is still clay,
just in a different shape.

8. Some elements can be changed
physically or chemically.
Periodic Table

9. Is determining changes all clear cut?
Not at all. Some changes are so minute we must
use a microscope to determine the type of
change that occurred. Others are easier to
determine the type of change. A question to ask
yourself, can I change it back to its original state;
if not you may have a chemical change.