1. BANG! ELEMENT CHEMICAL REACTION COMPOUND MIXTURE ELEMENT
if molecules collide with enough
force to break them into atoms, a
can take place
ELEMENT
CHEMICAL REACTION
hydrogen molecule, H2
BANG!
COMPOUND
MIXTURE
water, H2O
ELEMENT
a mixture of
hydrogen and
oxygen molecules
oxygen molecule, O2

2. E
2 H2 + O2
2 H2O +
Copyright © 2007 Pearson Benjamin Cummings. All rights reserved.

3. The Zeppelin LZ 129 Hindenburg catching fire on May 6, 1937 at Lakehurst Naval Air Station in New Jersey.

4. S.S. Hindenburg German zeppelin luxury liner Exploded on maiden voyage
Filled with hydrogen gas
In 1937, the passenger airship Hindenburg caught fire and crashed while trying to land at Lakehurst, New Jersey.
This incident lead to the use of helium in modern dirigibles (blimps).
Headline in Newspaper:
“HINDENBURG BURNS IN LAKEHURST CRASH; 21 KNOWN DEAD, 12 MISSING; 64 ESCAPE”
35 people died when the Hindenburg exploded.
May 1937 at Lakehurst, New Jersey

5. Hydrogen is the most effective buoyant gas,
but is it highly flammable. The disastrous fire
in the Hindenburg, a hydrogen-filled dirigible,
in 1937 led to the replacement of hydrogen
by nonflammable helium.

6. Erosion Takes a Powder Treated Untreated Top soil runoff Chem Matters
Sodium polyacrylate = waterlock reduces soil erosion in treated fields by 99%
Top soil runoff

7. Sodium Polyacrylate Absorbent Material Magicians Diapers Farmers
Absorbs 700x volume of water
Magicians
Pour water in hat and it “disappears”
Diapers
Farmers
Anti-erosion powder
Add to Soils
hold moisture between watering
Add link to Dust Bowl in the United States

8. Specific Heats of Some Substances
Substance (cal/ g oC) (J/g oC)
Water
Alcohol
Wood
Aluminum
Sand
Iron
Copper
Silver
Gold