Chemical and Physical changes Physical Change A change
- Slides: 66
Chemical and Physical changes
Physical Change A change in the size or state of matter
Physical Change • melting/freezing (changing state) • Breaking • Cutting • Squeezing • Mixing
Chemical Change When the molecules of matter change Can usually NOT change back to original form
Chemical Changes • • spark/flame Burning bubble/fizz (from gas) changes color changes smell hot/cold without heat cooking
Crumpling up paper
Physical change
Baking a cake
Chemical change
Melting cheese
Physical change
Burning cheese (or other food)
Chemical change
Cooking onions in a skillet
Chemical change
Chopping onions
Physical change
Making a party mix
Physical change
Tarnished silver
Chemical change
cracking open an egg
Physical change
cooking eggs
Chemical change
Chopping down a tree
Physical change
Melting wax
Physical change
Burning a candle
Chemical change
Melting butter
Physical change
Cutting your hair
Physical change
Bleaching your hair
Chemical change
Blowing up a balloon
Physical change
Popping a balloon
Physical change
Turning on a gas fireplace
Chemical change
Spraying hairspray (or paint or perfume)
Physical change
Lighting a firecracker
Chemical change
A rusty nail (or car)
Chemical change
Making lemonade
Physical change
Digesting your food
Chemical change
Broken pencil
Physical change
Broken glass
Physical change
Burning wood
Chemical change
Water boiling
Physical change
Melted metal
Physical change
Freezing water
Physical change