Use your understanding of chemistry to answer the following questions - Essay Example

1. How does sweating help cool me down? The effect of sweating is like pouring a cold water on our body when we feel hot. Except that sweat comes from our skin. The cooling down process happens through latent vaporization when the atmospheric temperature is humid or higher than our body’s temperature causing the hydrogen bonding of water on the body to evaporate. In effect, this evaporation of the water due to a humid atmospheric temperature cools me down. Sweating is basically our body’s internal cooling system and can be likened to a car’s radiator which cools the engine when it gets hot.2. What actually makes a chemical reaction happen?

Chemical reaction happens when molecules interact with each other. There should be two or more molecules involved for the chemical reaction to happen. This interaction between molecules causes the smaller parts of the molecules, the atoms to bond with each other and breaks down to form new molecules. When this happen, the possibilities of the resulting molecules are endless. 3. To stop a half-full bottle of pop from going flat, should I squash the bottle? Yes I should squash the bottle albeit it would make the container look ugly.

This consistent to Henry’s Law that states that the amount gas that dissolves in a liquid is directionally proportional to the pressure exerted to the gas in equilibrium with that liquid (www.khanacademy.org nd). Leaving a soda half-full without squashing the bottle will flat the soda because carbon dioxide that causes the hissing sound when we open it will seep out faster. There is now large amount of vacuum causing the soda to flatten. So by squashing the bottle, we virtually remove the space above the soda and increase the pressure inside the container preventing it from going flat.

BibliographyHenrys law. (n.d.). Retrieved March 3, 2015, from https://www.khanacademy.org/science/health-and-medicine/respiratory-system/gas_exchange/v/henry-s-law