Determining the Relative Melting Points

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Determining the Relative Melting Points
Melting A substance turning from its solid
state into its liquid state.
Melting Point The temperature at which a
substance will melt. It is a property of the
substance!
Burning When something is ON FIRE!
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Really Hot
Hot
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Relative Melting Points of
Aluminum Al (foil and wire)
Copper Cu (wire)
Iron (Steel) Fe (nail)
Sulfur S (chunks)
Tin Sn (foil)
Wax C25H52 (candle bits)
Zinc Zn (foil and pellets)
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Relative Melting Points of
Candle Candle Bunsen Burner Bunsen Burner
Substance Observation Did it Melt? Observation Did it Melt?
aluminum foil
aluminum wire
copper wire
iron nail
sulfur chunk
tin foil
wax chunk
zinc foil
Al Cu Fe S Sn C25H52 Zn
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Copper Coil in CANDLE FLAME
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Copper Coil in CANDLE FLAME
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Copper Coil in CANDLE FLAME
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Steel wool in the BUNSEN BURNER FLAME
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Relative Melting Points
Wax C25H52
53o C
127o F
Sulfur S
113o C
235o F
Tin Sn
232o C
450o F
Zinc Zn
420o C
788o F
Aluminum Al
660o C
1220o F
Copper Cu
1083o C
1981o F
Iron (Steel) Fe
1535o C
2795o F
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Copper Coil
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Copper Coil
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Copper Coil
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Copper Coil
Flame diminished Flame went out Flame popped up
on top
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Copper Coil
Flame diminished Flame went out Flame popped up
on top
Makes it smoke more!
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Really Hot
Hot
Clean Burn
Dirty Burn
CO2 and H2O
Soot and Smoke
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Copper Coil
Copper is a good conductor of heat
Flame area is cooled, resulting in a dirtier
burn, or even putting the flame out.
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Combustion
CxHy O2 CO2 H2O
Hydrocarbon Oxygen
Carbon Dioxide Water
Carbon Dioxide Water Carbon Compounds
Hydrocarbon Oxygen
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Nail vs Steel Wool
Iron (Fe)
Iron (Fe)
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Nail vs Steel Wool
Steel Wool in Pure Oxygen
Iron Powder in Flame
Iron Powder Burning in Slow Motion
Sparkling Poi
Aluminum Ant Hill
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Substance Freezer (-5oC) Room Temp (20oC) Boiling H2O (100oC) Oven (200oC) Furnace (400oC)
A long blue crystals long blue crystals long blue crystals blue liquid blue vapor
B red powder red powder red liquid red liquid red liquid
C white liquid white liquid white liquid white liquid liquid vaporized
D clear solid chunk clear liquid clear liquid liquid boiled away colorless vapor