Chapter 17 - EnviroChemistry

Question 1

name some fossil fuels

Answer 1

Coal
natural gas
petroleum

Question 2

Natural gas is made mostly of…

Answer 2

Methane

Question 3

What is petroleum built up from

Answer 3

Hydrocarbons

Question 4

what are hydrocarbons?

Answer 4

Organic compounds contining only hydrogen and carbon

Question 5

Composition of air

Answer 5

78% Nitrogen
21% oxygen
1% Noble gasses and CO2

Question 6

Source of CO2 in the air

Answer 6

Complete combustion of carbon containing fuels

Question 7

Source of CO in the air

Answer 7

Incomplete combustion of carbon containing fuels

Question 8

Source of methane in the air

Answer 8

Rotting vegetation and animal farts

Question 9

source of Nitrogen oxides in the air

Answer 9

car engines

Question 10

Source of sulfur dioxide

Answer 10

Combustion of fossil fuels which contain sulfur compounds

Question 11

How do CO2 and Methane cause global warming

Answer 11

The gasses trap excess heat in the atmosphere

Question 12

NPK fertilizer and function of each

Answer 12

Nitrogen - Healthy foliage
Phosphorus - roots and blooms
Potassium - plant growth

Question 13

What else are used as fertilizers

Answer 13

Ammonium salts and nitrates

Question 14

How do you test the purity of water?

Answer 14

See if it boils at 100 and melts at 0

Question 15

Why do we use didtilled water in experiments

Answer 15

Its got less impurities than tap water