Hannah 10 Flashcards
Nitrogen is ____ of the air we breathe
78%
Oxygen is _____ of the air we breathe
21%
Argon is ____ if the air we breathe (because of nuclear decay)
1%
\_\_\_\_\_\_\_: 2 DIFF molecules of the same element O2 (breathe) O3: ozone - High in atmosphere - uv protection
Allotropes
_______
- in pressurized sprays
- destroys O3(ozone)
- 1 of these can destroy 300,000 O3 molecules
Chlorofluorocarbons CFC
______
- medicines use it
- thanks to ***** drinking water life expectancy went up 10 years in the 1920s to 1930s
Medicines
Noble gases
-Ar= 1% - direct result of _____
Radioactive decay
____: smallest
- a result if Uranium decay it’s rare and expensive l
- from ground in Texas
- uranium ore decays —-> ***. Gas
- a lifting gas
- ** balloons have 30% **
He
________
Uses: leavening emulsifiers, carbonated beverages, detergents
_________:dissolves teeth in soda.
-pesticides, insecticides and herbicides
-never expose to young kids
Phosphorous
Phosphoric acid
\_\_\_\_\_\_\_ - hydrogen sulfide (H2S) -smells like rotten eggs Can contaminate well water -has many allotropes -mined from the ground -FRASH PROCESS: high pressure steam meets sulfur, bringing it out of the ground
Sulfur
________
- hydrogen sulfide (H2S)
- smells like rotten eggs
- can contaminate well water
- has many allotropes: 2 DIFF molecules of the same element
- mined from the ground
- Frash process: high pressure steam meets ***** bringing it out of the ground
Sulfur
_____: high pressure steam meets sulfur bringing it out of the ground
Frash process
_____ is used in farming
- combine S with O to make nitrates
Ammonia
AMMONIA is used in farming
Combine ___ and ___ to make NITRATES
S
O
Medicine and ______
- lung diseases (emphysema, lung cancer etc.)
- danger!!! It’s flammable! No smoking
Oxygen
_________(CFC)
- in AC units
- you cannot normally throw out AC units because *** will let into the atmosphere. It’s illegal to discard AC units in western nations. The chemicals must be bled out
Freon
In __________. (2000) CFC’s were banned worldwide
Montreal Protocol
______: blocks UVc
UVc increases the risk of cancer
Ozone
_______:uses -
- medicine
- antiseptic = ***** & Iodine
- crystal in B+W film
- firefighting
- HALON: a gas that contains this. *see pic
Bromine
______: a gas that contains bromine
- displaces O2 in a fire
- problem: people suffocated because no oxygen
- buildings with technology often have this
- has Brominev
Halon
*the bromiNes play HALON
______
- the most abundant element in the universe
- 70% of the universe is hydrogen
- DEUTERIM: ** isotope used by stars
Hydrogen
HYDROGEN -the most abundant element in the universe -70% of the universe is hydrogen -\_\_\_\_\_\_\_\_\_: hydrogen isotope used by stars Properties of Hydrogen Boiling point: -253 C Melting point: -260 C Hydrogen as fuel H2+O2---> H2O Lightest & cheapest gas -flammable: the HINDENBURG - to make Hydrogen: H2O---> H2 + O2
Deuterim
HYDROGEN -the most abundant element in the universe -70% of the universe is hydrogen - DEUTERIM: hydrogen isotope used by stars Properties of Hydrogen Boiling point: -253 C Melting point: -260 C Hydrogen as fuel H2+O2---> H2O Lightest & cheapest gas -flammable: the \_\_\_\_\_\_ - to make Hydrogen: H2O---> H2 + O2
Hindenburg
Sulfur contaminated many streams in _______
-results from RINSING PROCESS from MINING
-silver tarnishes from H2S
-chemical cleaners react from H2S
_______:oily sulfur based chemicals found in skunks
Western Pennsylvania
Mercaptans