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Chemistry of scuba diving ppt

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This document discusses scuba diving and how gas laws relate to the activity. It explains that scuba divers must be certified through training in buoyancy control and safe breathing using regulators attached to pressurized oxygen tanks. As divers descend, pressure increases according to Boyle's law, compressing gases in the body. To avoid damage, divers must ascend slowly to allow gases to release gradually per Henry's law and avoid decompression sickness. Understanding these gas laws is important for divers to safely navigate changes in depth and pressure underwater.

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Matthew Smith Chemistry Honors
Brief Information Allstaractivities.com Scuba-diving is an underwater hobby. To scuba-dive, one must become certified through classes and hands-on-training through the organization PADI (Professional Association of Diving Instructors). Major equipment of a scuba-divers gear is their regulator, tank, and BCD. The regulator and tank are used for breathing and the BCD controls buoyancy. The NUMBER ONE rule of scuba-diving is DO NOT hold your breath.
Chemistry Boyles Law- is an inverse relationship of pressure and volume. As volume decreases, pressure increases, or inversely (Belleman 5). P1V1=P2V2 When divers descend below sea level, they are adding more pressure than normal atmospheric pressure. (1 atm) When we go to the bottom of a pool, we feel a lot of pressure. How are we able to withstand depths up to 30 feet?
Boyles Law Continued Nurse Shark When scuba-divers dive, the tank that supplies the oxygen, gives it at the same pressure as the surrounding pressure (Belleman 5.) As stated earlier, the most important rule of scuba-diving is to not hold your breath. Why? The pressure on us while diving causes cavities in our body that contains air to be compressed. If we hold our breath and expand our lungs but do not breathe out, the pressure can cause damage to our lungs and can burst lung sacs (Belleman 5).
Ascending with Boyles Law When a diver ascends to the surface, the pressure is decreased which causes the volume of gas in our cavities to expand. That is why divers ascend in increments to lessen the risk of over expanding the lungs (Wood 1). Asset.emsofl.com
Henrys Law/The Bends Henrys Law- the solubility of gas is directly linked to pressure (Belleman 6). This means that as a diver descends gases dissolve more easily into our body than at normal atmospheric pressure. Nitrogen is a gas that is found in normal breathing air. When a diver descends, nitrogen dissolves into our body more easily. Lionfish
Decompression Sickness If divers ascend to fast, not only may strain occur to the lungs due to Boyles Law, but nitrogen bubbles may form which cause the Bends or Decompression Sickness (Belleman 6). The Bends occurs when the pressure is released too fast on ascension and the nitrogen gas bubbles escape (Wood 1). Decompression sickness can cause pain to the spinal cord and the muscles (David, Kulkarni, Phatak 1). Also death could occur.
Implications Understanding the gas laws helps us understand how to protect ourselves while scuba-diving. Sharkcagediving.blogs pot.com Dive-n-log.com Knowing how pressure affects our bodies, we can know how our scuba equipment helps us dive to large depths.
Works Cited Belleman, Mellisa, and Tim Graham. "Gas Laws and Scuba Diving." ChemMatters Feb. 2001: 4+. ACS. Web. 13 Apr. 2014. David, Eric, Pravin Kulkarni, and Uday Phatak. "Decompression syndrome (Caisson disease) in an Indian diver." Annals of Indian Academy of Neurology 13.3 (2010): 202. General Science Collection. Web. 13 Apr. 2014. Wood, Mary. "Boyle's and Charles' laws: a load of hot air?" Chemistry Review Sept. 2009: 8+. General OneFile. Web. 28 Apr. 2014.

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Chemistry of scuba diving ppt

  • 2. Brief Information Allstaractivities.com Scuba-diving is an underwater hobby. To scuba-dive, one must become certified through classes and hands-on-training through the organization PADI (Professional Association of Diving Instructors). Major equipment of a scuba-divers gear is their regulator, tank, and BCD. The regulator and tank are used for breathing and the BCD controls buoyancy. The NUMBER ONE rule of scuba-diving is DO NOT hold your breath.
  • 3. Chemistry Boyles Law- is an inverse relationship of pressure and volume. As volume decreases, pressure increases, or inversely (Belleman 5). P1V1=P2V2 When divers descend below sea level, they are adding more pressure than normal atmospheric pressure. (1 atm) When we go to the bottom of a pool, we feel a lot of pressure. How are we able to withstand depths up to 30 feet?
  • 4. Boyles Law Continued Nurse Shark When scuba-divers dive, the tank that supplies the oxygen, gives it at the same pressure as the surrounding pressure (Belleman 5.) As stated earlier, the most important rule of scuba-diving is to not hold your breath. Why? The pressure on us while diving causes cavities in our body that contains air to be compressed. If we hold our breath and expand our lungs but do not breathe out, the pressure can cause damage to our lungs and can burst lung sacs (Belleman 5).
  • 5. Ascending with Boyles Law When a diver ascends to the surface, the pressure is decreased which causes the volume of gas in our cavities to expand. That is why divers ascend in increments to lessen the risk of over expanding the lungs (Wood 1). Asset.emsofl.com
  • 6. Henrys Law/The Bends Henrys Law- the solubility of gas is directly linked to pressure (Belleman 6). This means that as a diver descends gases dissolve more easily into our body than at normal atmospheric pressure. Nitrogen is a gas that is found in normal breathing air. When a diver descends, nitrogen dissolves into our body more easily. Lionfish
  • 7. Decompression Sickness If divers ascend to fast, not only may strain occur to the lungs due to Boyles Law, but nitrogen bubbles may form which cause the Bends or Decompression Sickness (Belleman 6). The Bends occurs when the pressure is released too fast on ascension and the nitrogen gas bubbles escape (Wood 1). Decompression sickness can cause pain to the spinal cord and the muscles (David, Kulkarni, Phatak 1). Also death could occur.
  • 8. Implications Understanding the gas laws helps us understand how to protect ourselves while scuba-diving. Sharkcagediving.blogs pot.com Dive-n-log.com Knowing how pressure affects our bodies, we can know how our scuba equipment helps us dive to large depths.
  • 9. Works Cited Belleman, Mellisa, and Tim Graham. "Gas Laws and Scuba Diving." ChemMatters Feb. 2001: 4+. ACS. Web. 13 Apr. 2014. David, Eric, Pravin Kulkarni, and Uday Phatak. "Decompression syndrome (Caisson disease) in an Indian diver." Annals of Indian Academy of Neurology 13.3 (2010): 202. General Science Collection. Web. 13 Apr. 2014. Wood, Mary. "Boyle's and Charles' laws: a load of hot air?" Chemistry Review Sept. 2009: 8+. General OneFile. Web. 28 Apr. 2014.