Gases In The Atmosphere
Bayani Gaba-gaba
The air you breathe is a mixture of gases with a remarkably stable composition. Nitrogen makes up about four-fifths of the atmosphere, oxygen about one-fifth, and the remaining fraction includes carbon dioxide, water vapour, and noble gases. Despite carbon dioxide being present in tiny amounts, its role in climate change makes it one of the most discussed molecules on the planet.
In this lesson you will learn the composition of dry air, explore experiments that measure the percentage of oxygen, study the combustion of elements in oxygen, examine how carbon dioxide forms from the thermal decomposition of metal carbonates, and understand why rising carbon dioxide levels contribute to climate change.
Manufura
- Know the approximate percentages by volume of the four most abundant gases in dry air
- Understand how to determine the percentage by volume of oxygen in air using experiments
- Describe the combustion of elements in oxygen, including magnesium, hydrogen and sulfur
- Describe the formation of carbon dioxide from the thermal decomposition of metal carbonates
- Know that carbon dioxide is a greenhouse gas and that increasing amounts in the atmosphere may contribute to climate change
- Determine the approximate percentage by volume of oxygen in air using a metal or a non-metal
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Gases In The Atmosphere. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- What is the approximate percentage of nitrogen in dry air? A) 21% B) 78% C) 0.9% D) 0.04% Answer: B
- Which gas is tested for by using limewater? A) Oxygen B) Hydrogen C) Carbon dioxide D) Nitrogen Answer: C
- What is produced when magnesium burns in oxygen? A) Magnesium hydroxide B) Magnesium carbonate C) Magnesium oxide D) Magnesium chloride Answer: C
- Which of the following is a greenhouse gas? A) Nitrogen B) Oxygen C) Argon D) Carbon dioxide Answer: D
- What colour flame is seen when sulfur burns in oxygen? A) White B) Yellow C) Blue D) Red Answer: C
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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Kana son yin aikin tambayoyin gwaji kan Gases In The Atmosphere? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
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