Atomic Structure & Periodic Table
A mindmap from the checklist on Topic C2a - Atomic Structure and the Periodic Table. Edexcel 2011 Spec Additional Science. CHEMISTRY
- Created by: Rhys Hudson
- Created on: 01-11-12 16:34
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- Atomic Structure & Periodic Table
- atoms consist on central nucleus
- Surrounded by orbiting electrons
- Protons / Electrons / Neutrons
- Electrons have -1 charge and little mass
- Neutrons have 0 charge and 1 atomic mass unit
- KEYWORDS
- ATOMIC NUMBER = number of protons in an atom
- MASS NUMBER = protons + neutrons
- ISOTOPE: 2 or more atoms with same atomic number but different number of neutrons
- KEY POINTS
- Isotopes have same atomic number and different mass numbers
- Mendeleev made periodic table
- Relative Atomic Mass
- average mass of all natural isotopes
- atoms consist on central nucleus
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