Physical and Chemical Changes
By Jonathan Curran
Physical Properties
changing the identity of the material
Examples:
Color and Shape
Length and Mass
Volume and Density (D=M/V
Physical Changes
The physical property of a substance change, but the identity of the substance does not change
Examples:
changing from one state of matter to the next (ice melts to liquid, liquid boils to steam.)
Melting point = 0 degrees celsius, Boiling point = 100 degrees celsius
melting ice, smashing glass, tearing paper
Chemical Properties
Any charecteristic that gives a substance the ability to undergo a change that results in a whole new substance
Examples:
Flamability (ablity to burn)
Reacts with oxygen (ability to rust)
Reacts with light (pictures being developed)
Reacts with water (medicine dissolving in water
Chemical Change
A change in the identity of a substance due to the chemical properties of that substance (you have a new substance thar is not reversible)
Examples:
Flamabilty (ability to burn)
Reacts with oxygen (fruit rotting)
Heat and light (vitamins can change when exposed to light)
Electricity (water can be broken down with electricity)