Atomic Structure Chm 1.1.1. Matter MixturesPure Substances.

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Presentation transcript:

Atomic Structure Chm 1.1.1

Matter

MixturesPure Substances

Compounds Elements that are CHEMICALLY bonded together Can’t be separated by physical means

Elements Made up of 1 type of atom

Atoms Smallest unit of matter That has the characteristics of the element  What elements are made of

Regions of the Atom Nucleus Electron Cloud -Area surrounding the nucleus

Nucleus Subatomic Particles: Proton – mass = 1amu positive charge Neutron – mass = 1amu no charge

Electron Cloud Subatomic Particle: Electron – mass = 0 amu negative charge orbits the nucleus

Ions + An atom with an electrical charge cation

Ions - anion

Isotopes Different number of neutrons = different mass

Isotope Designation Carbon - 12

Atomic Number, Mass # and Atomic Mass Atomic Number Atomic Mass Mass Number = 59