Chem 10

• Hydrogen
• 1A - Metal/gas

• Helium
• 8A - Noble Gases

• Lithium
• 1A - Alkali metals

• Beryllium
• 2A - Alkaline earth metals

• Boron
• 3A - Metalloids

• Carbon
• 4A - Metalloids

• Nitrogen
• 5A - Non-metals

• Oxygen
• 6A - Non-metals

• Fluorine
• 7A - Non-metals

• Neon
• 8A - Noble gases

• Sodium
• 1A - Alkali metals

• Magnesium
• 2A - Alkaline earth metals

• Aluminum
• 3A - Metalloids

• Silicon
• 4A - Metalloids

• Phosphorus
• 5A - Metalloids

• Sulfur
• 6A - Non-metals

• Chlorine
• 7A - Non-metals

• Argon
• 8A - Noble gases

• Potassium
• 1A - Alkali metals

• Calcium
• 2A - Alkaline earth metals

• H - Hydrogen
• Li - Lithium
• Na - Sodium
• K - Potassium
• Rb - Rubidium
• Cs - Cesium
• Fr - Francium

• Be - Beryllium
• Mg - Magnesium
• Ca - Calcium
• Sr - Strontium
• Ba - Barium
• Ra - Radium

• He - Helium
• Ne - Neon
• Ar - Argon
• Kr - Krypton
• Xe - Xenon
• Rn - Radon

• F - Fluorine
• Cl - Chlorine
• Br - Bromine
• I - Iodine
• At - Astatine

Representative Elements

Transition Elements / Metals

• tera
• 10¹²

• giga
• 10⁹

• mega
• 10⁶

• kilo
• 10³

• hecto
• 10²

• deca / deka
• 10¹

• deci
• 10^-1

• milli
• 10^-3

• micro
• 10^-6

• nano
• 10^-9

• pico
• 10^-12

• femto
• 10^-15

• molecules made up of two atoms
• H₂ - hydrogen, O₂ - oxygen, N₂ - nitrogen
• group 7A - halogens
• F₂ - fluorine, Cl₂ - Chlorine, Br₂ - bromine, I₂ - Iodine

• 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 atoms
• 5. atoms are indivisible; atoms are not created or destroyed in chem reactions, just regrouped

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)

• B - Boron
• Al - Aluminium
• Ga - Gallium

• C - Carbon
• Si - Silicon
• Ge - Germanium
• Sn - Tin
• Pb - Lead

• N - Nitrogen
• P - Phosphorus
• As - Arsenic
• Sb - Antimony

• O - Oxygen
• S - Sulfur
• Se - Selenium
• Te - Tellurium

Sc - Scandium

Ti - Titanium

V - Vanadium

• Cr - Chromium
• W - Tungsten

Mn - Manganese

• Fe - Iron
• Co - Cobalt
• Ni - Nickel

• Cu - Copper
• Ag - Silver
• Au - Gold

• Zn - Zinc
• Cd - Cadmium
• Hg - Mercury