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Unit #3- Environmental Chemistry
Transcript of Unit #3- Environmental Chemistry
A GROWING CONCERN
HOW DO YOU SPELL RELIEF
HOW MUCH IS TOO MUCH
Getting away from it all?
Unit #3- Environmental Chemistry
A HAIR RAISING DILEMMA
REFERRED TO AS MINERALS
100mg/DAY OR MORE
GIVES YOU ENERGY
SOURCES: RICE GRAINS, POTATOES AND FRUITS.
HELP BULID AND REPAIR MUSCLE TISSUES
SOURCES: MEAT, EGGS, DAIRY PRODUCTS, LEGUMES, NUTS
STORES UNUSED ENERGY
SOURCES: VEGETABLE OIL, NUT OILS, SOME DAIRY
LESS THAN 100mg/DAY
CONTAINS 3 ELEMENTS
ROOT AND STEM GROWTH
Toxin used to kill bugs, but had larger effects on large birds or pray through biomagnification
an indicator paper that turns red in an acid and blue in a base
pH paper is used to test the acidic levels in liquids, water would be considered neutral so color changes would occur in the middle of the color wheel
technology to chemically treat gases produced in combustion to remove hazardous components and neutralize acidic gases
7 on the pH scale
8-14 on pH scale,
turns litmus paper
When an acid reacts with a base, the properties of each are neutralized and the products are water and a salt.
Devices installed in the exhaust stream of cars to reduce emissions.
Rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur, nitrogen and carbon) combine with water
Neutralization of acidic lakes with calcium carbonate
Power of Hydrogen
Has between 0-6 on the pH scale, turns litmus paper red
accumulation of toxins in the tissues of organisms as you move up the food chain
WHEN PESTICIDES ARE OVER USED ORGANISMS BECOME RESISTANCE OF THAT CHEMICAL AND IT NO LOGER AFFECTS THEM
Any one of these various substances is used to kill "pests"
Serious symptoms occur after only one exposure
ex. carbon monoxide
Serious symptoms occur after multiple exposures
ex. mercury poisoning, radiation
Species whose health reflects the health of its ecosystem
A widely spread source of pollution, such as road runoff, that is difficult to link to a specific point of origin
The use of living organisms to detoxify and restore polluted and degraded ecosystems
A place to deposit solid waste, where a layer of earth is bulldozed over garbage each day to reduce emissions of gases and odors from the decaying trash, to minimize fires, and to discourage vermin.
A landfill designed to hold hazardous material so it cannot contaminate and cause environmental problems
substance or energy put into the environment that has unwanted effects
There are two types of toxicity, the toxicity is how toxic a substance or material is.
Lethal Dose 50
The amount of a chemical that kills 50% of the test population, also referred to as LD50
A specific source of pollution that can be identified, such as a pipe or smoke stack.
Capable of being readily decomposed into harmless substances by microorganisms