FC: Physical and Chemical Changes By: Amy Large
1: Physical Changes
2: Saltwater evaporating is an example of a physical change because the chemical composition stays the same. The only thing that has changed is the state of the saltwater.
3: Crumpling Paper is an example of a physical change because it is still paper. The shape of the paper is the only thing that has changed.
4: Cutting food is an example of a physical change because the food is still food. The food is now just in smaller pieces, it hasn't changed.
5: Ice melting is an example of a physical change because it is still water just in another form. it is now a liquid instead of a solid.
6: Chemical Changes
7: Burning paper is an example of a chemical change because the paper has been changed to a whole new substance. Flammability is also a property of a chemical change.
8: Apples browning are an example of chemical changes because the apples change due to a chemical reaction known as oxidation. It is similar to metals rusting.
9: Baking cookies is an example of a chemical change because the heat from the oven causes chemicals to change the form of the cookie to where you cannot reverse it.