Unit C - Topic 1 + 2

Question 1

What is denitrification

Answer 1

When nitrites are turned back into nitrogen gas and it goes in the sky.

Question 2

What denitrifies

Answer 2

bacteria when is decomposes

Question 3

What is nitrogen fixing

Answer 3

when nitrogen is is turned into nitrites/nitrates and put into the soil

Question 4

How is nitrogen fixed

Answer 4

Lightning
Nodules in roots
Bacteria in soil

Question 5

What are the numbers on fertilizers

Answer 5

In order:
amounts of Nitrogen, phosphorus, potassium in the fertilizer
N,P,K

Question 6

How do landfills keep things sanitary

Answer 6

Plastic Lining and clay

Question 7

What is the pH scale

Answer 7

How Acidic or basic a substance is using a scale of 0-14
0 - 6.9 = acidic
7 = neutral
7.1 - 14 = basic

Question 8

What does pH neutralization make

Answer 8

Sodium chloride (NaCl - salt)
H20 (water)

Question 9

What tools measure pH

Answer 9

Indicator
Indicator paper
Litmus paper

Question 10

Indicator

Answer 10

a liquid that changes color depending on the pH

Question 11

Indicator paper

Answer 11

paper that changes color depending on the pH (more accurate)

Question 12

Litmus paper

Answer 12

paper that changes red or blue depending on pH
blue - base
red - acid

Question 13

Macronutrients

Answer 13

Lots of nutrients

Question 14

Micronutrients

Answer 14

little nutrients

Question 15

What’s an organic molecule (carbon)

Answer 15

4 types:
- lipids
- carbs
- protein
- nucleic acid

Question 16

What’s an inorganic molecule

Answer 16

anything that’s not an organic molecule
(not normally found in living things)