Environmental Chemistry Flashcards
What percent of air is nitrogen
78%
How can nitrogen be fixed
Bacteria in the soil
Bacteria on nodes found at the end of plant roots
Lightning
What does this stand for? 12-28-12
12% nitrogen compound
28% phosphorus compound
12% potassium compound
what is a pesticide?
kill or control insects
what is a herbicide?
kill or control weed
what is a fungicide?
kill fungi
5 ways to change concentration of chemicals
Agricultural Activities
Solid Waste
Waste Water
Fuel Combustion
Industrial Processes
What is an Acid
Compound that dissolves in water, and the pH is less than 7
What is a base
Compound that dissolves in water and the pH is higher than 7
What is neutralization
the process where an acid reacts with a base and it becomes neutral
How much more acidic is a pH of 6 than a pH of 2
10,000
How much more basic is a pH of 14 than a pH of 9
100,000
What is an inorganic compound
compound that does not contain carbon
What is an organic compound
compound that contains carbon
What are nine elements essential in large quantities for growth and life?
Carbon
Hydrogen
Oxygen
Nitrogen
Phosphorus
Potassium
Magnesium
Calcium
Sulfur
What are the 3 ways for plants to get water and nutrients
diffusion
osmosis
active transportation
What is diffusion
diffusion is the movement of particles from an area of high concentration to low concentration
What is osmosis
Osmosis is the diffusion of water.
water will move from the soil (higher
concentration) into the roots (lower
concentration)
what is active transportation
Active transport is the movement of
particles from an area of low
concentration to an area of high
concentration
What is Ingestion
Ingestion is the process of taking in food
food is broken down physically
What is a substrate
A substrate is a material on which an organism lives, moves or feeds on
