Presentation on theme: "The Atom and Its Parts Physical Science. The three subatomic particles are: Proton – Positive charge Electron – Negative charge Neutron – No charge."— Presentation transcript:
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
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 – 10.811 1.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 10.811 = 11 11 – 5 = 6 6