Topic 1-3 enviromental Chemestry

Question 0

Briefly explain the food groups of Canadian good guide

Answer 0

1. grains - like carbohydrates
2. Dairy product - sorta like lipids
3. meat and alternatives - lipids and proteins
4. Fruits and veggies - vitamins

Question 1

Nutrients ? What do they do for us?

Answer 1

They keep us healthy and feed us what our body needs

Question 2

What are pesticides ?

Answer 2

Things that effect vegetation like herbs and weeds and insects and fungus (foreshadow)

Question 3

What are the 4 organic nutrients and inorganic nutrients?

Answer 3

organic:

1. Lipids (fats)
2. Vitamins
3. proteins
4. Carbohydrates

inorganic:
1. minerals

Question 4

What are herbicides ?

Answer 4

They control weeds (type of pesticide)

Question 5

What are fungicides ?

Answer 5

Control fungus (type of pesticides)

Question 6

What are insecticides ?

Answer 6

Controls insects (type of pesticides)

Question 7

What is biomagnification ?

Answer 7

How much pesticides in the food chain

Question 8

What is DDT? Positives? Negatives?

Answer 8

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

Question 9

What is bioaccumulation?

Answer 9

Amount of pesticides in one specific species

Question 10

What is a tropic level?

Answer 10

The level of biomagnification (food chain like)

Question 11

What are acids?

Answer 11

A substance that is sour and used in a lot of foods with a PH value of 0-6.9, example: lemon juice

Question 12

What is a base ?

Answer 12

It is a bitter and slippery substance with a PH scale of 7.1 -14 example: calcium carbonate .

Question 13

What’s considered neutral?

Answer 13

Anything with a PH scale of 7 or around 7

Question 14

What are some indicators an what do they do?

Answer 14

Litmus paper
Phenolphthalein
Methyl red
THESE ALL TELL YOU IF ITS AN ACID OR BASE

Question 15

What does PH value tell us?

Answer 15

Indicates If it’s a base or acid and if it’s a strong or weak acid/base. using numbers

Question 16

What does neutralizing mean?

Answer 16

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

Question 17

What is and what does universal indicator paper tell us????

Answer 17

It changes colour and tell you the exact PH value of a substance

Question 18

What’s lining?

Answer 18

A type of neutralizing when you add calcium carbonate(example of a base) to an acidified lake, to make it neutral (think zero pairs)

Question 19

What’s a catalyst?

Answer 19

It’s something you add to a reaction to make it go faster

Question 20

What’s oxidation?

Answer 20

Mixing things with oxygen, like rusting

Question 21

What’s a scrubber?

Answer 21

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

Question 22

What’s a catalyst converter ?

Answer 22

Helps to get rid of pollutants (example: a scrubber (I think) )

Question 23

What does phosphorous help with in the body?

Answer 23

Promotes proper bone formation, regulates metabolism, forms compounds that store energy

Question 24

What does potassium do to the body?

Answer 24

It helps regulate nerve signals and muscle activity , involved in protein formation, required to regulate and acids/ bases balance

Question 25

What does iodine do to the body?

Answer 25

Major component of thyroid hormones which regulates metabolism

Question 26

What does iron do to the body?

Answer 26

It crucial part of red blood cells that regulate oxygen transportation

Question 28

what chemicals are contained in fertilizers and what part of the plant are they improving?

Answer 28

nitrogen- leaves of plants

phosphorous- roots of plants

potassium- flowers of plants

Question 29

what are the requirements of organic farming practices?

Answer 29

to only use natural chemicals, all chemicals need to be biodegradable, non carcinogenic, doesn’t accumulate, reduces pests and to be economical.

Question 29

how is acid precipitation made and what is it? and what are its effects?

Answer 29

*

Question 31

how is acid precipitation made and what is it? and what are its effects?

Answer 31

it is rain that is very acidic, it affects the aquatic ecosystem and reduces productivity of crops and harms other vegetation. it effects the decay of buildings, and affects the industries of forestry, fishing, agriculture, tourism and construction.