CHEMISTRY: PESTICIDES AND CHEMICALS

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CHEMISTRY: PESTICIDES AND CHEMICALS

Global warming is the ongoing rise of the average temperature of the Earth's climate system which has various negative effects.

TEXTILE DYES

composed of a group of atoms known as chromophores

"dyes can adhere to compatible surfaces by solution, by forming covalent bond or complexes with salts or metals, by physical adsorption or by mechanical retention"

COTTON PRODUCTION USES MANY CHEMICALS

Climate change is supported by scientific evidence.

Endosulfan: C9H6Cl6O3S

Write down the consequences caused by the melting of the ice-caps and how it will affect our lives and the environment in the future.

e.g.: decreasing of polar bear habitat

causes fatal poisoning

most widely used pesticide

Aldicarb: C7H14N2O2S

Write down the consequences caused by this issue and how it will affect our lives and the environment in the future.

e.g.: decreasing of land surface

most toxic chemical

BAMBOO RAYON

Climate change is likely to both increase electricity demand for cooling in the summer and decrease electricity, natural gas, heating oil, and wood demand for heating in the winter.

made by cooking bamboo in chemical solvents

New infrastructure investments may be necessary to meet increased energy demand.

e.g.: nuclear power plants

chemicals transform the stalk into long cellulose strands which then create bamboo textiles.

also called viscose rayon:" chemically processed cellulose fibers.

sodium hydroxide and carbon disulfide

diluted solution of sodium hydroxide is added to the cellulose sodium xanthogenate.

carbon disulfide is known for evaporating into the air and running off into waterways, contributing to global pollution

hydroxide ion (pH effect) found in sodium hydroxide is hazardous for the environment. A high concentration in water will result in toxic effects for aquatic organisms e.g. fish.

CHEMICAL REACTIONS

photodegradation

breaking down pesticides by sunlight

degradation

hydrolysis, reaction between pesticides and water

water degrades pesticides by dividing large molecules into smaller ones, occur in the surface or root zone or whenever source of water is available

non-biological breakdown or transformation of the pesticide

chemical degradation

change them from one omopound to one or more derivatives - reactions happen based off PH and moisture levels of the soil