The Atom and Its Parts Physical Science.  The three subatomic particles are:  Proton – Positive charge  Electron – Negative charge  Neutron – No charge.

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Presentation transcript:

The Atom and Its Parts Physical Science

 The three subatomic particles are:  Proton – Positive charge  Electron – Negative charge  Neutron – No charge or neutral Chemistry: Atomic Structure

 Molecule – Made of more than one atom. Can be the same type or different types of atoms Element – Molecule made of Only one type of atom Compound – Molecule made of different types of atoms Particles

Atomic Structure

 The atomic number tells you the number of Protons (+) Electrons (-) Atomic Number Remember, the atom’s positives and negatives must equal in order for it to be balanced or neutral.

 Use Atomic Mass and the Atomic Number to calculate the number of neutrons an atom has: Example:Boron Atomic number – 5 Atomic mass – Round the atomic mass to the nearest whole number 2. Subtract the atomic number from the rounded number Boron has neutrons in the nucleus Atomic Mass = – 5 = 6 6