Science Fair

science fair

9.22.14
9.22.14
By: Bethany gavins

By: Bethany gavins

Dehydration
Dehydration

Problem Statement
Problem Statement
The purpose of this experiment is to compare the dehydration rate of plant and animal cells exposed to anhydrous ammonia.
The purpose of this experiment is to compare the dehydration rate of plant and animal cells exposed to anhydrous ammonia.

Ammonia is one of the most commonly produced industrial chemicals in the United States. It is used in industry, and also exists naturally in humans and in the environment. In the environment, ammonia is part of the nitrogen cycle and is produced in soil from bacterial processes. Ammonia is also produced naturally from decomposition of organic matter, including plants, animals and animal wastes.
Some chemical/physical properties of ammonia are:
  * At room temperature, ammonia is a colorless, highly irritating gas with a pungent, suffocating odor.
  * In pure form, it is known as anhydrous ammonia and is hygroscopic (readily absorbs moisture).
  * Ammonia has alkaline properties and is corrosive.
  * Ammonia gas dissolves easily in water to form ammonium hydroxide, a caustic solution and weak base.
  * Ammonia gas is easily compressed and forms a clear liquid under pressure.
  * Ammonia is usually shipped as a compressed liquid in steel containers.
  * Ammonia is not highly flammable, but containers of ammonia may explode when exposed to high heat.

About 80% of the ammonia produced by industry is used in agriculture as fertilizer. Ammonia is also used as a refrigerant gas, for purification of water supplies, and in the manufacture of plastics, explosives, textiles, pesticides, dyes and other chemicals. It is found in many household and industrial-strength cleaning solutions. Household ammonia cleaning solutions are manufactured by adding ammonia gas to water and can be between 5 and 10% ammonia. Ammonia solutions for industrial use may be...