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Physical and Chemical Changes




 

This is a series of lectures in videos covering Chemistry topics taught in schools.

Related Topics:
More Lessons on Chemistry

Lessons for High School Chemistry

Physical and Chemical Changes
Video for middle school science teachers to help with the differences between physical and chemical changes.

Physical Changes:
Can be easily undone
Do not change into a different substance
Can change states (solid, liquid, ga or plasma)

Chemical Changes:
Change in color.
Change in odor.
Might produce a gas or precipitate.
Energy may be released or absorbed.
Forms a new substance.
Is not easily reversed.
Physical and Chemical Change
Fourth Grade Science Experiment to demonstrate physical change and chemical change.



Physical and Chemical Changes
Examples of physical and Chemical Changes are demonstrated.
In a physical change only physical properties such as size, shape and state are changed. A new substance is not formed.
In a chemical change a new substance is formed.
Chemical & Physical Changes of Matter
Physical Change: Change in physical state.
Change in shape.
Reversible.

Chemical Change:
Change in chemicals.
New substance formed.


 
This video explains the difference between physical and chemical changes. A brief discussion of chemical reactions and equations is also included.

Physical Change.
Appearance changes but substance does not.
Chemical Change.
Substance Change.
Physical and Chemical Changes.


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