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BSC2085 - Test 1

Anatomy - Maser

Electron Shells regions around nucleus; occupied by electrons; numbered 1-7
Energy Level electron shell
Shell 1 holds two
Shell 2 - 7 hold eight
Valence atom's outer energy level; contain chemically reactive electrons
Valence electrons chemically reactive
Rule of Eights (Octet Rule) atoms interact to stabilize; fill outer shell
Chemically Inert Elements outer energy level filled
Inert unreactive
Noble Gases example of inert elements
Ions transfer electrons in or out; unbalanced charged particle
Anions negative ion; gains electrons
Cations positive ion; loses electrons
Ionic bonds opposite charges attract and bond together
Covalent Bonds sharing of electrons, each atoms fills outer shell but only part of the time, stability without electron transfer
Hydrogen Bonds surface tension of water, H+ of water molecule attracts 0- atom of another water molecule
Reactants number and kinds
Products new chemical substances
Molecular Formula shows product number & kinds of atoms, shows number of molecules
Synthesis anabolic/constructive, combine atoms/molecules into larger complex
Decomposition catabolic/destructive, break molecules into smaller molecules/atom
Water most abundant inorganic molecule, 60-80% volume of living cells
Salts ionic compounds, dissociate into ions in water, are electrolytes
Electrolytes conduct electric current in solution, nerve impulses, muscle contraction
Created by: NknmJewel