1. Matter
Matter: anything that has mass and takes up space.

2. Is all Matter the same?
Pure Substance: a single kind of matter that has a constant, specific make-up

3. Elements
Elements: a pure substance that cannot be broken down into another substance
Made of 1 type of atom

4. When Atoms Combine
Chemical Bond: attraction between atoms, caused by moving valence electrons
When atoms combine they form a Molecule: 2 or more atoms held together by a chemical bond.
Ex: H2O, CO2, and O2

5. Compound: a pure substance made of two or more elements (different atoms) chemically combined.
***When a compound forms, the compound has properties that are different from the uncombined elements.***
All compounds have unique properties

6. + =

7. Mixture: two or more substances that are physically together but not chemically combined
***Each substance in a mixture keeps its own chemical properties.***
Two types of mixtures:
Heterogeneous: parts are unevenly distributed, see different parts (ex: a salad)
Homogeneous: parts are evenly distributed, looks the same throughout(ex: sugar water), also called SOLUTIONS.

9. Separating Mixtures
Parts of a compound are hard to separate (chemical process), Mixtures are easy to separate (physical process)
You can use the following methods to separate a mixture
Magnetic attraction
Filtration
Distillation
Evaporation