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Atoms!. LG: I can describe the location, charge and mass of the three subatomic particles. Atomic Structure. Subatomic Particles. 3 subatomic particles make up atoms:. Characteristics of Atoms. Number of protons is the atomic number ; this determines the identity of the element
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Atoms! LG: I can describe the location, charge and mass of the three subatomic particles
Subatomic Particles • 3 subatomic particles make up atoms:
Characteristics of Atoms • Number of protons is the atomic number; this determines the identity of the element • Mass of an atom = protons + neutrons • Isotopesof an element have different masses because they have different numbers of neutrons (but same number of protons) • Standard Atomic Notation – shows the mass and atomic number of an element (“biggie over small”) • Example :