Explain how pressure affects a scuba diver rising to the surface

1 answer:

8 0

When underwater a diver is under greater pressure then when at the surface of the water and the deeper you go down the higher the pressure. A diver is also inhaling pure pressurized oxygen so when they begin to go up toward the surface of the water the pressure on the diver is lessened which causes the gases in the blood stream to expand, most particularly nitrogen gas, due to the lower amounts of experienced pressure and the higher concentration of oxygen in the blood stream. Now if the diver surfaces to rapidly the expanding gas can travel to the brain damaging it and/or rupturing blood vessels which can cause hemorrhaging which in turn can cause death. The situation where a diver surfaces too quickly and the expanded gas damages their brain is called The Bends. <span />

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Answer:

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All of the options are proofs that chemical change has occurred.

A chemical change is one with the following properties:

A new kind of matter is usually formed as seen by the gas evolution and the formation of the insoluble precipitate i.e brown solid at the bottom of the beaker.
They are not easily reversible.
Usually accompanied by energy changes as seen in the rise in temperature.
Color changes can also infer chemical changes in a reaction.

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