Physics - 4PH1 PearsonEdexcel

Ideal Gas Molecules

Bayani Gaba-gaba

Every breath you take pushes back against the atmosphere, and every tyre on the road stays inflated because billions of tiny molecules slam into its inner walls each second. Gas behaviour connects the invisible world of molecules to measurable quantities like pressure, volume and temperature.

In this lesson you will explore how gas molecules create pressure, why there is a lowest possible temperature, and how to convert between the Celsius and Kelvin scales. You will then learn Boyle's law and the pressure law, practising the calculations that Edexcel tests on Papers 1 and 2.

Manufura

  1. Explain how molecules in a gas have random motion and that they exert a force, and hence a pressure, on the walls of a container
  2. Understand why there is an absolute zero of temperature, which is -273 C
  3. Describe the Kelvin scale of temperature and be able to convert between the Kelvin and Celsius scales
  4. Understand why an increase in temperature results in an increase in the average speed of gas molecules
  5. Know that the Kelvin temperature of a gas is proportional to the average kinetic energy of its molecules
  6. Explain, for a fixed amount of gas, the qualitative relationship between pressure and volume at constant temperature, and between pressure and Kelvin temperature at constant volume
  7. Use the relationship between the pressure and Kelvin temperature of a fixed mass of gas at constant volume: p1/T1 = p2/T2
  8. Use the relationship between the pressure and volume of a fixed mass of gas at constant temperature: p1V1 = p2V2

Takardar Darasi

A balloon stays inflated even though nothing visible is holding it open. A bicycle tyre supports the weight of a rider on a thin strip of rubber. The atmosphere presses down on every square metre of the Earth's surface with a force equivalent to about ten tonnes. Behind all of these is the same mechanism: gas molecules in constant, chaotic motion, colliding with every surface they meet.

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Nazarin Darasi

Barka da kammala darasi akan Ideal Gas Molecules. 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.

  1. What is the temperature of absolute zero on the Celsius scale? A) 0 degrees Celsius B) -100 degrees Celsius C) -273 degrees Celsius D) -373 degrees Celsius Answer: C
  2. A fixed mass of gas is compressed at constant temperature. What happens to the pressure? A) It stays the same B) It decreases C) It increases D) It drops to zero Answer: C
  3. Which temperature is equivalent to 373 K? A) 373 degrees Celsius B) 100 degrees Celsius C) 0 degrees Celsius D) -100 degrees Celsius Answer: B
  4. A sealed container of gas is heated at constant volume. What happens to the gas molecules? A) They move faster and collide with the walls more often B) They slow down and exert less pressure C) They expand and increase in size D) They stop moving Answer: A
  5. A gas has a volume of 200 cm3 at a pressure of 100 kPa. If the pressure is doubled at constant temperature, what is the new volume? A) 400 cm3 B) 200 cm3 C) 100 cm3 D) 50 cm3 Answer: C

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Akwai a Android, Windows, macOS, da Linux

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.

Cikakkiyar bayanan darasi tare da zane-zane
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Yi karatu ba tare da intanet ba, a kowane lokaci, a ko'ina
Akwai a Android, Windows, macOS, da Linux

Yi Aikin Tambayoyin Gwaji

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