Physical and Chemical Changes
By: Raul Habib
Physical Change
Definition: A change in matter that does not affect it's chemical composition.
Examples: Cutting a pear, cutting an apple, and or cutting paper.
Chemical Change
Definition: A chemical reaction: a process that changes substances.
Examples: Burning wood, burning salt and or burning paper.
Physical Property
Definition: Is a characteristic of a substance that can be observed without changing the substance into something else.
Examples: Sand paper is rough, water is slippery and cotton is soft.
Chemical Property
Definition: Is characteristic when a substance interacts with another substance.
Examples: The making of salt, the making of dry ice and the making of ink
The 4 Indicators: Change in pH, temperature, color, the appearance of foam, and the changes in volume or density.