Environmental Chemistry

In the graph, the concentration of CFCs is reported in :

• ppm (parts per million)

• ppb (parts per billion

• ppt (parts per trillion)

• Years

Tags

NGSS.MS-PS1-3

Which year had the highest concentrations of CFCs in the atmosphere?

• 1990

• 1982

• 1998

• 1978

Tags

NGSS.HS-ESS3-5

By what amount did carbon dioxide in Earth's atmosphere increase between 1960 and 2000?

• 40 -50 ppm

• 60 -70 ppm

• 110 -120 ppm

• 360 -370 ppm

Tags

NGSS.MS-ESS3-5

Which of the following concentrations is higher?

• 0.2 ppm

• 2.2 ppm

• 20.2 ppm

• 200 ppm

Arrange the following chemicals from most to least toxic: dioxin, nicotine, botulinum toxin A, dieldren.

• Dieldren, dioxin, nicotine, botulinum toxin A

• Dieldren, nicotine, dioxin, botulinum toxin A

• Botulinum toxin A, nicotine, dioxin, dieldren

• Botulinum toxin A, dioxin, nicotine, dieldren

Tags

NGSS.MS-ESS3-4

NGSS.MS-PS1-2

Scrubbers are devices installed in smokestacks to

• reduce the amount of materials such as SO₂ in the smoke they discharge

• clean out the stack so smoke can move rapidly upwards

• reduce the amount of sulphur in coal before it is burned

• clean out the boilers for more efficient operation

Which of the following would decrease concentration of pollutants?

• dilution

• deposition

• biomagnification

• inhalation

If a site had been polluted by industrial chemicals, and trees were planted to absorb the chemicals, the technique used is called

• genetic engineering

• biostimulation

• oleophilic

• phytoremediation

Tags

NGSS.MS-ESS3-3

The reaction that occurred in this experiment is known as…

• corrosion

• cellular respiration

• neutralization

• combustion

Tags

NGSS.MS-PS1-2

Water that soaks through the soil and carries dissolved substances into the soil is called…

• acid rain

• leachate

• contaminant

• filtrate

Tags

NGSS.MS-ESS2-4