Matter is anything that has mass. Takes up space or volume. The stuff around you that you can sense. All matter has physical and chemical properties.
The properties you can see or sense.
ex. color, size, state of matter, weight, mass, shape, hardness, texture, appearance, etc.
Properties you can't sense. To find a chemical property, you need to test it by putting it together with another substance. You have to test it to find out.
ex. Oxidation (combines w/ oxygen), Combustion (rapid oxidation), etc.
Rusting and tarnishing. Silver turns black, copper turns green, etc.
The material changes in appearance but remains the same substance.
ex. cut, tear, draw on, shred= still paper
ex. dissolve, crush, smash= still asprin
Changes state of matter- water = ice
If the change can be reversed, it can go back and forth then it is a reversible change.
ex. water = ice
Chemical Change/ Reaction
When the substance(s) changes into a new substance(s). Energy is always involved in a chemical reaction
How to Know
When the chemical/physical properties of the material you start with is different than the chemical/physical properties that you end with.
"When what you start with is NOT what you end with."