Presentation on theme: "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."— Presentation transcript:
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 : 1 1 H Atomic mass : 1 amu Uses: light gas that can be used as a fuel. Check out the Video here here
Helium Symbol : 4 2 He Atomic number 2 Uses: lighter than air, often in balloons
Lithium Symbol: 7 3 Li Number of protons and electrons: 3 Uses: metal that is very reactive with water; part of some batteries Video herehere
Beryllium Symbol: 9 4 Be Atomic mass: 9 amu Uses: lightweight parts for missiles and spacecraft
Boron Symbol: 11 5 B Atomic number: 5 Uses: makes plastic- like polymers like Silly Putty or burns with an interesting flame as boric acid
Carbon Symbol: 12 6 C Atomic mass: 12 (used a reference for all matter) Uses: two forms – graphite in pencils or diamond!
Nitrogen Symbol: 14 7 N Atomic number: 7 Uses: makes up 78% of our atmosphere; vital to living organisms
Oxygen Symbol: 16 8 O Atomic Number: 8 Uses: required for cellular respiration as O 2 ; protects Earth from uv rays as O 3
Fluorine Symbol: 19 9 F Number of electrons: 9 Uses: Reacts violently with everything (even glass)! Check herehere
Neon Symbol: Ne Number of protons, electrons and nuetrons: 10 Uses: fluorescent lights (red)
Sodium Symbol: Na Atomic mass: 23 amu Uses: reactive with water; component of table salt and ion channelsreactive
Magnesium Symbol: Mg Atomic mass: 24 amu Uses: welding and old photography equipment
Aluminum Symbol: Al Uses: foil used for cooking, rims on car wheels
Silicon Symbol: Si Uses: computer chips, but not silicone – a plastic like substance
Phosphorus Symbol: P Uses: occurs in 3 forms – white (dangerous!), red and black; found in pyrotechnics
Sulfur Symbol: S Uses: also known as brimstone; smells just awful
Chlorine Symbol: Cl Uses: used as one of the first forms of chemical warfare; often used as bleach to disinfect
Argon Symbol: Ar Uses: Also in fluorescent lights – blue in colour!
Potassium Symbol: K Uses: part of fertilizer, very reactive with water; found in bananas reactivewater
Calcium Symbol: Ca Uses: rare in pure form, but as a compound is key to bones and teeth