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Questions and Answers
What is the primary element of air?
What is the primary element of air?
- Nitrogen (correct)
- Water vapor
- Argon
- Oxygen
Which gas makes up the highest percentage of the atmosphere?
Which gas makes up the highest percentage of the atmosphere?
- Nitrogen (correct)
- Argon
- Water vapor
- Oxygen
What is the second most dominant gas in dry air?
What is the second most dominant gas in dry air?
- Argon
- Oxygen (correct)
- Carbon dioxide
- Water vapor
Which gas is present in small amounts in the atmosphere?
Which gas is present in small amounts in the atmosphere?
What are the properties of air?
What are the properties of air?
What role does air play in the environment?
What role does air play in the environment?
Flashcards
What is Air?
What is Air?
A mixture of gases constituting Earth's atmosphere, crucial for sustaining life.
Nitrogen (N2)
Nitrogen (N2)
An odorless and colorless gas, making up 78% of the atmosphere.
Oxygen (O2)
Oxygen (O2)
A gas essential for the survival of living things, making up 21% of the air we breathe.
Argon (Ar)
Argon (Ar)
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Air's appearance
Air's appearance
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Air's Environmental Role
Air's Environmental Role
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Study Notes
Air is a mixture of gases that make up the Earth’s atmosphere, and it is essential for life on our planet. The composition of air is as follows:
- Nitrogen (78%): The primary element of air, nitrogen is an odorless and colorless gas that makes up the highest percentage of the atmosphere
- Oxygen (21%): The second most dominant gas in dry air, oxygen is essential for the survival of living things
- Argon (1%): A trace gas, argon is present in small amounts in the atmosphere
- Water vapor, carbon dioxide, and other trace gases: These components are present in minor amounts in the atmosphere, with water vapor varying depending on temperature and location
The properties of air include:
- Colorless and odorless: Air does not have any color or odor, and it is an invisible matter that can only be felt
- Occupy space: As a mixture of different gases, air occupy space, and its density, pressure, and temperature change with altitude
- In the atmosphere, the composition of air does not change as you travel through the layers
Air has an influential role in the abiotic components of the environment, including wind, rain, and climate It is essential for life on Earth, as all living things breathe air for their survival The composition of air is an essential topic in various areas, including aeronautics, industrial gas products, and atmospheric conditions [100] [101] [102] [103] [104] [105] [106] [107] [108] [109] [110] [111] [112] [113] [114] [115] [116] [117] [118] [119] [120] [121] [122] [123] [124] [125] [126] [127] [128] [129] [130] [131] [132] [133] [134] [135] [136] [137] [138] [139] [140] [141] [142] [143] [144] [145] [146] [147] [148] [149] [150] [151] [152] [153] [154] [155] [156] [157] [158] [159] [160] [161] [162] [163] [164] [165] [166] [167] [168] [169] [170] [171] [172] [173] [174] [175] [176] [177] [178] [179] [180] [181] [182] [183] [184] [185] [186] [187] [188] [189] [190] [191] [192] [193] [194] [195] [196] [197] [198] [199] [200] [201] [202] [203] [204] [205] [206] [207] [208] [209] [210] [211] [212] [213] [214] [215] [216] [217] [218] [219] [220] [221] [222] [223] [224] [225] [226] [227] [228] [229] [230] [231] [232] [233] [234] [235] [236] [237] [238] [239] [240] [241] [242] [243] [244] [245] [246] [247] [248] [249] [250] [251] [252] [253] [254] [255] [256] [257] [258] [259] [260] [261] [262] [263] [264] [265] [266] [267] [268] [269] [270] [271] [272] [273] [274] [275] [276] [277] [278] [279] [280] [281] [282] [283] [284] [285] [286] [287] [288] [289] [290] [291] [292] [293] [294] [295] [296] [297] [298] [299] [300] [301] [302] [303] [304] [305] [306] [307] [308] [309] [310] [311] [312] [313] [314] [315] [316] [317] [318] [319] [320] [321] [322] [323] [324] [325] [326] [327] [328] [329] [330] [331] [332] [333] [334] [335] [336] [337] [338] [339] [340] [341] [342] [343] [344] [345] [346] [347] [348] [
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