C10 - chemistry of the environment

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

define groudnwater

Back (Answer)

water from underground

Front (Question)

define aquifer

Back (Answer)

water from underground

Front (Question)

water tests (reversible reaction)

Back (Answer)

1) anhydrous Copper (II) sulfate + water ⇌ hydrated Copper (II) sulfate white ⇌ blue A CS major W suck- A Comp Sci major Will suck. 2) anhydrous Cobalt (II) chloride + water ⇌ hydrated Cobalt (II) chloride blue ⇌ pink

Front (Question)

process of treatment of water

Back (Answer)

-screen the big items -add coagulant; make soluble things insoluble (ppt & form sediment) -filter sediment with sand -add carbon; remove taste & smell -add chlorine; kill pathogen & microbes -add fluorine; prevents teeth enamel from decaying -store water in reservoir

Front (Question)

why may some water be harmful even after treatment

Back (Answer)

-mosquito lays eggs -algae grows

Front (Question)

how to make dirty water safe for drinking

Back (Answer)

-boil it -filter it

Front (Question)

how to get pure water from seawater

Back (Answer)

simple distillation

Front (Question)

how to check if water is impure

Back (Answer)

-melt below 0C -boils above 100C

Front (Question)

air percentages

Back (Answer)

78% - nitrogen 21% - oxygen 1% - other gases (argon, carbon dioxide, water vapor, noble gases)

#10

Front (Question)

things needed for combustion

Back (Answer)

-fuel -heat -oxygen

#11

Front (Question)

uses of nitrogen

Back (Answer)

-liquid N2 freezes food for transport - low reactivity & abundant supply -fertiliser

#12

Front (Question)

uses of oxygen

Back (Answer)

-aerobic respiration -welding in gas tanks -fuel cell

#13

Front (Question)

uses of noble gases

Back (Answer)

-coloured lights (argon, neon, helium) -fire extinguisher (argon) -advertising signs -balloons

#14

Front (Question)

most reactive gas in air

Back (Answer)

-oxygen -nitrogen & noble gases aren’t that reactive

#15

Front (Question)

how to separate gases in air

Back (Answer)

-pump air -remove carbon dioxide & water vapor -expand & compress gas to liquify it at -200C -boil liquid & elements gases rises in order of lowest boiling point (fractional distillation)

#16

Front (Question)

order of gases rising in air separation

Back (Answer)

nitrogen, argon, oxygen, krypton, xenon

#17

Front (Question)

biggest expense when separating air

Back (Answer)

electricity to run for compression & expansion

#18

Front (Question)

experiment to measure % of oxygen in air

Back (Answer)

-100cm^3 of air in gas syringe -copper in between gas syringe and another glass -heat copper as syringe pumps air back & forth -oxygen is used up to make Copper oxide which changes from brown to black = reaction is complete -79% air left

#19

Front (Question)

how to reverse reaction in experiment to measure % of oxygen in air using

Back (Answer)

-fill syringe with helium -copper is displaced from Copper oxide

#20

Front (Question)

common pollutant in the air

Back (Answer)

-carbon particles -sulfur dioxide -nitrogen monoxide -nitrogen dioxide -carbon monoxide -carbon dioxide (methane)

#21

Front (Question)

harmful effects of sulfur dioxide

Back (Answer)

-causes acid rain (react with water vapor in cloud & form sulfuric acid) = acidic soil, kills animals, corrode buildings

#22

Front (Question)

harmful effects of nitrogen oxides

Back (Answer)

-causes acid rain (react with water vapor in cloud & form nitric acid) = acidic soil, kills animals -respiratory problems -nitrogen dioxide = photochemical smog = global dimming (no photosynthesis, warmth, vitamin D)

#23

Front (Question)

harmful effects of carbon dioxide

Back (Answer)

-increases global warming = climate change = extreme weather conditions, less thermal energy loss to space

#24

Front (Question)

harmful effects of carbon monoxide

Back (Answer)

-toxic gas to humans (binds to hemoglobin)