Nutrients
What foods do you receive protein from and what do they do?
Meats, eggs, beans, dairy, tofu
Build muscle and repair body
What is dispersion?
A pollutant getting release from a source and scattering
Name 1 characteristic for each acids and bases
Acids = Low pH, sour, give off H+
Bases = high pH, slippery, bitter, give off OH-
Draw an example of a carbohydrate
pasta, rice, bread, sugar
I have a test tube with lemon juice. I add a mystery substance in and test the pH with red litmus paper which stays red. What could the mystery substance be?
Vinegar, HCl, more lemon juice
What are 3 characteristics of all organic compounds?
Have carbon and hydrogen
Are biodegradable
Made by living things
What is leachate and how is stopped?
Leachate is landfill waste mixed with precipitation, it is contained by a clay lining
What pH does a strong base have?
What pH does a weak base have?
Strong = 10-14
Weak = 7-10
Draw something that would neutralize a base
Lemons, juice, battery acid
Slide 79
LD90 is 160mg/kg
Give 2 examples of organic materials and 2 inorganic materials
Organic = food, animals, plants
Inorganic = minerals, rocks
How does fertilizer have an impact on water?
More algae --> more decomposers --> less oxygen
What do acids give off?
What do bases give off?
Acids give off hydroniums (H+)
Bases give off (OH-)
Show an example of low and high turbidity
Low = clear water
High = murky
Slide 80
Manipulated = dose (x-axis)
Responding = % dead (y-axis)
Controlled = method of substance administration, age and size of rats
What nutrients do plants need that they receive from fertilizer?
Potassium, phosphate, nitrates
Substance A = Is not water soluble and is heavy
Substance B = Light weight and dissolves in water
Which substance will travel further down a river?
Substance B
Slide 77
Add a base to make it more neutral
Draw a source of acid rain
Cars and factories
Slide 78
Water is poor
Low pH, low oxygen, high phospates/nitrates, high turbidity
Describe the process of phytoremediation
Plants absorbing and breaking down pollutants in the area around them
Substance A has a pH of 3
Substance B has a pH of 9
How many times more acidic is A compared to B?
1000 000
1 million times acidic because each number in pH is x10
Draw a 3 part food chain that has been affected by mercury. Label the following values on the animals: 700 ppb, 2 ppm, 50 ppb
Top predator = 2ppm
Medium = 700 ppb
Bottom prey = 50 ppb
What is biomagnification and which 2 substances are used as examples of causing this effect?
Toxin increases in concentration as we move up the food chain (top predators are most effected),
Examples: DDT (formerly used pesticide) and mercury