Physical and Chemical Changes
Any characteristic of a material that can be observed or measured without changing the identity of the material.
- Color and Shape
- Length and Mass
- Volume and Density (D=M/V)
The physical property of a substance change, but the identity of the substance does not change.
- Changing from one state of matter to the next. (Ice melts to liquid-liquid boils to steam)
- Melting 0 degrees C, and Boiling Point 100 degrees C.
- Slicing bread, melting ice, mowing lawn.
Any characteristic that gives a substance the ability to undergo a change that results in a new substance.
- Flammability (Ability to burn)
- Reacts with oxygen (Ability to rust)
- Reacts with water (Medicine dissolving in water)
A change in the identity of a substance due to the chemical properties of that substance. (You have a new substance) (Is it reversible?)
- Flammability (Fire burning to ash)
- Reacts with oxygen (Fruit rotting)
- Heat and light ( Vitamins can change exposed to light)
- Electricity (Water can be broken down with electricity)