Tuesday, September 21, 2010

Gases and Climate Change

1) Combustion
Hypothesis: When the rubbing alcohol is ignited, it will blow up.
Observation: the flame caused the rubbing alcohol to act as fuel for the bottle and shot it 5-8 ft. It had a delay of 0.5 seconds.

The combustion and gases such as methane can hurt the environment by collecting in the atmosphere and trap the heat there. This causes glaciers and icebergs to melt and make the water rise.



2) CO2
Hypothesis: the candles will be put out.
Observations: the gas put out the candles because CO2 deprived the flame of the oxygen

Carbon dioxide affects the atmosphere because the ratio between the plants that photosynthesize and CO2

*sodium bicarbonate: NaHCO3 is split into Na, H, O and CO2.



3) Hydrogen
Hypothesis: the hydrogen will fuel the flame, unlike the co2
Observations: the zinc popped and crackled as soon as it was introduced to the hydrochloric acid and when the flame was introduced, the

4) Air pressure
Hypothesis 1: The gas in the can will escape
Observation 2: Absolutely nothing happened
Hypothesis 2: The can will expand, because water will come in
Observations 2: The can collapsed on itself, BOOM! noise

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