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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.

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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:

1 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

2 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.

3 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

4 Helium Symbol : 4 2 He Atomic number 2 Uses: lighter than air, often in balloons

5 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

6 Beryllium Symbol: 9 4 Be Atomic mass: 9 amu Uses: lightweight parts for missiles and spacecraft

7 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

8 Carbon Symbol: 12 6 C Atomic mass: 12 (used a reference for all matter) Uses: two forms – graphite in pencils or diamond!

9 Nitrogen Symbol: 14 7 N Atomic number: 7 Uses: makes up 78% of our atmosphere; vital to living organisms

10 Oxygen Symbol: 16 8 O Atomic Number: 8 Uses: required for cellular respiration as O 2 ; protects Earth from uv rays as O 3

11 Fluorine Symbol: 19 9 F Number of electrons: 9 Uses: Reacts violently with everything (even glass)! Check herehere

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

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

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

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

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

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

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

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

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

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

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


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