Chemical and Physical changes/prop.
Phen Hardin
Chemical Changes
Usually, a different substance is formed. And it can not be changed back to its normal substance. Examples: Burning, tarnishing, rusting, cooking, etc.
Physical Changes
Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
Chemical Properties
Describes how substances can form different substances.
Physical Properties
Characteristics of a substance that can be observed without changing the substance. Need to use 5 senses.
Examples: Color
Shape
Size
Texture
Volume
Mass