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Li
- Lithium
- 1A - Alkali metals
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Be
- Beryllium
- 2A - Alkaline earth metals
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Mg
- Magnesium
- 2A - Alkaline earth metals
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P
- Phosphorus
- 5A - Metalloids
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K
- Potassium
- 1A - Alkali metals
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Ca
- Calcium
- 2A - Alkaline earth metals
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Group 1A
Alkali metals
- H - Hydrogen
- Li - Lithium
- Na - Sodium
- K - Potassium
- Rb - Rubidium
- Cs - Cesium
- Fr - Francium
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Group 2A
Alkaline earth metals
- Be - Beryllium
- Mg - Magnesium
- Ca - Calcium
- Sr - Strontium
- Ba - Barium
- Ra - Radium
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Group 8A
Noble gases
- He - Helium
- Ne - Neon
- Ar - Argon
- Kr - Krypton
- Xe - Xenon
- Rn - Radon
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Group 7A
Halogens
- F - Fluorine
- Cl - Chlorine
- Br - Bromine
- I - Iodine
- At - Astatine
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A - series family
Representative Elements
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B - series family
Transition Elements / Metals
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Diatomic Elements:
- molecules made up of two atoms
- H2 - hydrogen, O2 - oxygen, N2 - nitrogen
- group 7A - halogens
- F2 - fluorine, Cl2 - Chlorine, Br2 - bromine, I2 - Iodine
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Dalton's Atomic Theory
- 1. elements are made of tiny particles called atoms
- 2. all atoms given element are identical
- 3. atoms of a given element are different from any other element
- 4. compounds - different atoms combined always have same relative numbers & types of atoms5. atoms are indivisible; atoms are not created or destroyed in chem reactions, just regrouped
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Law of Constant Composition
A given compound always contains the same proportions (by mass) of the elements. (i.e. water always contains 8g of (8 O - oxygen) and 2.7g of ( 6 C - carbon)
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Group 3A
- B - Boron
- Al - Aluminium
- Ga - Gallium
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Group 4A
- C - Carbon
- Si - Silicon
- Ge - Germanium
- Sn - Tin
- Pb - Lead
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Group 5A
- N - Nitrogen
- P - Phosphorus
- As - Arsenic
- Sb - Antimony
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Group 6A
- O - Oxygen
- S - Sulfur
- Se - Selenium
- Te - Tellurium
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Group 6B
- Cr - Chromium
- W - Tungsten
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Group 8B
- Fe - Iron
- Co - Cobalt
- Ni - Nickel
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Group 1B
- Cu - Copper
- Ag - Silver
- Au - Gold
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Group 2B
- Zn - Zinc
- Cd - Cadmium
- Hg - Mercury
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