Atomis Structure Slideshow

Atomic Structure

• Modern Day Atom
• An atoms radius is 0.1nm
• Atomic mass unit (amu)
• Atoms are chemically neutral because the number of protons and electrons are equal
• Arrangement of electrons e.g., 2,8,1
• Elements are arranged in order by their atomic number
• Proton - In nucleus, charge +1, mass of 1amu
• Neutron - In nucleus, charge 0, mass of 1amu
• Electrons - Energy Shells, charge -1, 1/1840 (almost zero)
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• Caption: cat ion

Ions

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• An ion is a charged particle formed when an ion gains or loses electrons
• A positively charged ion is formed when a metal or hydrogen atom loses electrons
• A negatively charged ion is formed when electrons are added to a non-metal atom
• Caption: catom