Acids and Bases
This tool is the best way to determine if a substance is acidic or basic?
What is a pH meter?
This process describes the increase in DDT levels through the food chain
What is biomagnification
The three nutrients labeled on fertilizers to help plants grow.
What are nitrogen, phosphorus, and potassium?
This term describes the ability of a chemical to cause harm.
What is toxicity?
This is the scientific term for a substance that prevents fungal growth
What is a fungicide?
Chemicals that have a bitter taste and feel slippery are classified as this
These pollutants break down over time.
What are non persistent pollutants?
The organic molecule class that provides immediate energy.
What are carbohydrates?
This measurement describes concentration as a ratio, not a value.
What is ppm, or parts per million?
The class of substances used to kill insects.
What are pesticides?
When a base is added to an acid , this process occurs
What is neutralization
This type of pollutant does not easily break down in the environment.
What is a persistant pollutant?
These nutrients always contain carbon
What are organic nutrients?
The term "LD50" refers to this
What is the dose required to kill 50% of a population?
This type of chemical is designed to kill unwanted plants
What is an herbicide?
What is a base?
What type of molecule is found in oil products?
Lipids
The meaning of "percent" in scientific measurements
What is parts per hundred?
How can you neutralize an acid?
A substance with a pH of 9 is this many times more acidic than compared to a substance with a pH of 11
100 times!
( 10 times for each level of pH you move up or down)
Acid precipitation harms ecosystems in these ways
Leaching minerals
Washing heavy metals into water
Harming vegetation
What is the organic major molecule found in meat products?
Proteins
If something has a low LD50 ( e.g. 5) it means that:
These species are used to assess the health of an environment
What are indicator species?