APES 06.02 Ozone Flashcards

8841628707	Troposphere	Ozone found here can be created in small amounts naturally by a lightning storm, but that it is also considered a pollutant and is the primary ingredient in smog. It can harm vegetation by hurting its ability to photosynthesize, as well as cause respiratory illnesses in human beings.	0
8841646001	Stratosphere	Ozone found here where it is important in protecting us from ultraviolet radiation from the sun.	1
8841650836	"Good up high, bad nearby"	Describes where ozone is helpful (the stratosphere) and where it is harmful (the troposphere).	2
8842755267	2NO + O2 → 2NO2	Nitrogen oxide (NO) reacts with oxygen gas (O2) to form nitrogen dioxide (NO2), which forms a brownish haze that is characteristic of photochemical smog.	3
8842769419	NO2 + UV light → NO + O	Nitrogen dioxide (NO2) reacts with ultraviolet light to form nitrogen oxide and oxygen.	4
8842923004	O + O2 → O3	The free atom of oxygen (O) bonds to oxygen gas (O2) to form ozone, which is considered a pollutant in the troposphere.	5
8842958717	Respiratory effects of having too much ozone in the troposphere	-tightness in the chest -reduced lung function -damage to cells in the lung -increased susceptibility to lung infection -aggravation of asthma	6
8843014532	Sources of ozone	Industrial facilities and automobile emissions, which contribute NOx and VOCs, which create a series of reactions that produce ozone under the influence of sunlight and heat.	7
8843018729	2NO + O2 → 2NO2; NO2 + UV light → NO + O; O + O2 → O3	Reactions describe the formation of ozone in the troposphere?	8
8843056658	CCl3F + UV light → CCl2F + Cl	CFC decomposes, leaving a free atom of chlorine as a product.	9
8843203229	Cl + O3 → ClO + O2	Free atom of chlorine and ozone produce chlorine oxide and oxygen gas.	10
8843333483	ClO + O → Cl + O2	With the addition of a free atom of oxygen, chlorine oxide decomposes.	11
8843335974	Cl + O → ClO + O2	A free atom of chlorine combines with ozone to produce chlorine oxide and oxygen gas.	12
8859932029	Ozone-depleting substances	-chlorofluorocarbons (CFCs), propellants, and blowing agents -hydrochlorofluorocarbons (HCFCs), also propellants and blowing agents (and used to replace CFCs) -halons, used in fire protection -methyl bromide, a soil fumigant -carbon tetrachloride, a solvent -methyl chloroform, a cleaning agent	13
8860010397	Montreal Protocol	An international agreement to reduce production and consumption of ozone-depleting substances.	14
8860023560	Ultraviolet radiation	With _____ ______, CFCs (such as CCl3F) break down to produce free chlorine atoms (Cl), which, in turn, break down ozone O3.	15