Chem+Basics

=Chemical Basics..................... =

I. Matter: A.) Anything that has mass and volume
 * Weight- the pull of gravity on mass

B.) Characteristics: 1.)Physical Properties- Mass, volume, color, odor, shape, texture, taste, hardness,melting point, boiling point, Phase (solid, liquid, gas)

C.) Atoms: The smallest unit of matter. 1.)Protons- Positive charge in the nucleus. 2.)Neutrons- Neutral charge in the nucleus. 3.)Electrons-Negative charge, makes a cloud around the nucleus.
 * Atomic Number-number of proteins[[image:ATP.gif align="right"]]
 * Atomic mass- number of proteins-neutrons.

D.) Chemical Elements: -Oxygen -Hydrogen -Carbon -Nitrogen
 * Consist of at least one atom.

E.) Compounds and Molecules: - Two or more elements combined.


 * Compound

- Molecules ~ Covalently Bonded