Unit II - Chemistry In this unit we will discuss the elements of the periodic table, how elements combine to make molecules and the properties of elements and compounds

Today's Starter Quote Don't put off living to next week, next month, next year or next decade. The only time you’re ever living is in this moment.

Hydrogen Symbol : 11 H Atomic mass : 1 amu Uses: light gas that can be used as a fuel. Check out the Video here

Helium Symbol : 42 He Atomic number 2 Uses: lighter than air, often in balloons

Lithium Symbol: 73 Li Number of protons and electrons: 3 Uses: metal that is very reactive with water; part of some batteries Video here

Beryllium Symbol: 94 Be Atomic mass: 9 amu Uses: lightweight parts for missiles and spacecraft

Boron Symbol: 115 B Atomic number: 5 Uses: makes plastic- like polymers like Silly Putty or burns with an interesting flame as boric acid

Carbon Symbol: 126 C Atomic mass: 12 (used a reference for all matter) Uses: two forms – graphite in pencils or diamond!

Nitrogen Symbol: 147 N Atomic number: 7 Uses: makes up 78% of our atmosphere; vital to living organisms

Oxygen Symbol: 168 O Atomic Number: 8 Uses: required for cellular respiration as O2; protects Earth from uv rays as O3

Fluorine Symbol: 199 F Number of electrons: 9 Uses: Reacts violently with everything (even glass)! Check here

Neon Symbol: 2010 Ne Number of protons, electrons and nuetrons: 10 Uses: fluorescent lights (red)

Sodium Symbol: 2311 Na Atomic mass: 23 amu Uses: reactive with water; component of table salt and ion channels

Magnesium Symbol: 2412 Mg Atomic mass: 24 amu Uses: welding and old photography equipment

Aluminum Symbol: 2713 Al Uses: foil used for cooking, rims on car wheels

Silicon Symbol: 2814 Si Uses: computer chips, but not silicone – a plastic like substance

Phosphorus Symbol: 3115 P Uses: occurs in 3 forms – white (dangerous!), red and black; found in pyrotechnics

Sulfur Symbol: 3216 S Uses: also known as brimstone; smells just awful

Chlorine Symbol: 3517Cl Uses: used as one of the first forms of chemical warfare; often used as bleach to disinfect

Argon Symbol: 4018 Ar Uses: Also in fluorescent lights – blue in colour!

Potassium Symbol: 3919 K Uses: part of fertilizer, very reactive with water; found in bananas

Calcium Symbol: 4020 Ca Uses: rare in pure form, but as a compound is key to bones and teeth