C3: Atoms, Elements, and Compounds

Página 1

Physical changes: not chemically changed, only the molecules are arranged differently and how strongly they are held by intermolecular forces

Chemical Changes: When you change something chemical makeup

Element: substance made from only one type of atom

Cannot be broken down (chemically) into a more simple substance

Compound: substance made from 2 or more elements that have reacted chemically with each other

It's a completely new material that will have totally new different properties from the elements that made it

Cannot be separated by physical methods

Mixtures: contains 2 or more substances that have not chemically reacted with one another

Made out of little bits of each substance mixed together

Can be separated by physical methods

New Page