chen unit test
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how to tell if a substance is organic or inorganic
if it molds or has carbon it’s organic
role of carbohydrates
energy source for metabolism
lipids role
storage of unused chemical energy
proteins role
Structural molecule for body that helps chemical reactions
Difference between trace elements and macronutrients
trace element- amount of minerals needed per day macronutrient - carbs, lipids, proteins
what are the ingredients in fertilizer?
nitrogen, phosphorus, potassium
What is biomagnification?
Toxicity concentration increases as it moves at the food chain.
how do incects become resistant to pesticides?
overtime insects will become used to the pesticides and adapt rothem and it won’t harm them anymore
What are acids like
red, sour, tart
what are bases like?
blue, bitter, slippery
what happens to the acidity of a solution as a pH value decreases
When pH value decreases, the substance becomes more acidic
Equation for neutralization
acid+base=neutral (7)
how do you neutralize an acid spill and base spill
pour acid on base and base on acid
What is acid rain?
Pollution that goes into the air and condenses into clouds to make toxic rain
what is acid rain made of
Carbon, nitrogen, Sulfer (burning materials)
Effects of acid rain
Destroys, lakes and streams, reduces production of crops, decay on buildings/statues
how many millilitres of toxin must be added to 1,000,000 mL of water to produce a 9 PPM solution
9ml
What is toxicity?
Ability of a chemical to cause harm to an organism
What is LD50?
lethal dose 50 dose of a chemical that will kill 50% of the population it’s applied to
what is the relationship between temperature in oxygen concentrations
Cold Water water holds more dissolved oxygen
What are bio indicators?
Organisms that indicate the health of environment
Relationship between pollution levels, and biodiversity
High pollution levels equals biodiversity decrease
what is the relationship between oxygen concentration, and biodiversity
High oxygen concentration equals more biodiversity
what is the relationship between oxygen concentration in the number and types of ivertebrates found in a river
higher oxygen equals more invertebrates