Physical and Chemical Change
By: Mary Sevart
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 light (pictures being developed)
- 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? NO])
- 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)