Warm Up Question –Name the three subatomic particles. –List anything you think you might know about them.

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Presentation transcript:

Warm Up Question –Name the three subatomic particles. –List anything you think you might know about them.

Matter & The Atom

Matter Anything that has mass and takes up space (has volume) Made up of different kinds of atoms

All matter is made of atoms

Atomic Structure Inside Nucleus Protons Neutrons Outside Nucleus-Electrons

Atomic Structure Electrons Tiny Negative charge Move outside the nucleus

Atomic Structure Protons Big Positive charge Inside the nucleus

Atomic Structure Neutrons Big No charge: neutral Inside the nucleus

energy level nucleus electrons+ + protons neutrons- - Atomic Structure

Describing Atoms Atomic Number = # of protons the # of protons = the # of electrons Atomic Mass Number = protons + neutrons.

Valence Electrons: Only the electrons in the outer shell of an atom

Think About It … Make a Brace Map of an Atom. Break it down into its three subatomic particles and list a few characteristics of each.