Topic 1-3 enviromental Chemestry Flashcards
Briefly explain the food groups of Canadian good guide
- grains - like carbohydrates
- Dairy product - sorta like lipids
- meat and alternatives - lipids and proteins
- Fruits and veggies - vitamins
Nutrients ? What do they do for us?
They keep us healthy and feed us what our body needs
What are pesticides ?
Things that effect vegetation like herbs and weeds and insects and fungus (foreshadow)
What are the 4 organic nutrients and inorganic nutrients?
organic:
- Lipids (fats)
- Vitamins
- proteins
- Carbohydrates
inorganic:
1. minerals
What are herbicides ?
They control weeds (type of pesticide)
What are fungicides ?
Control fungus (type of pesticides)
What are insecticides ?
Controls insects (type of pesticides)
What is biomagnification ?
How much pesticides in the food chain
What is DDT? Positives? Negatives?
it is a chemical used to kill diseases on people during the second world war because they couldn’t shower or clean.
Positives-it kills off what you want it to kill off
Negatives - eventually it will harm things that weren’t intended to
What is bioaccumulation?
Amount of pesticides in one specific species
What is a tropic level?
The level of biomagnification (food chain like)
What are acids?
A substance that is sour and used in a lot of foods with a PH value of 0-6.9, example: lemon juice
What is a base ?
It is a bitter and slippery substance with a PH scale of 7.1 -14 example: calcium carbonate .
What’s considered neutral?
Anything with a PH scale of 7 or around 7
What are some indicators an what do they do?
Litmus paper
Phenolphthalein
Methyl red
THESE ALL TELL YOU IF ITS AN ACID OR BASE
What does PH value tell us?
Indicates If it’s a base or acid and if it’s a strong or weak acid/base. using numbers
What does neutralizing mean?
To make sure that there is an equal balance of acids and bases in a lake. If there’s more acid (an acidified lake) add more bases. If it had more bases in it (basic lake) add more acids
What is and what does universal indicator paper tell us????
It changes colour and tell you the exact PH value of a substance
What’s lining?
A type of neutralizing when you add calcium carbonate(example of a base) to an acidified lake, to make it neutral (think zero pairs)
What’s a catalyst?
It’s something you add to a reaction to make it go faster
What’s oxidation?
Mixing things with oxygen, like rusting
What’s a scrubber?
Something that’s in a factory and basically filters the amount of pollution that escapes the building by using a scrubber. Inside the scrubber there is a sorbent that absorbs carbon dioxide “cleaning” the pollutants
What’s a catalyst converter ?
Helps to get rid of pollutants (example: a scrubber (I think) )
What does phosphorous help with in the body?
Promotes proper bone formation, regulates metabolism, forms compounds that store energy
