Solids, Liquids And Gases
Gbogbo ọrọ náà
Put an ice cube on a warm plate and you watch a solid with a fixed shape turn into a liquid that flows into every dent in the china, and then into a gas you cannot see at all. Nothing has been added and nothing has been taken away. The same water particles are there at the end as at the start. All that has changed is how closely those particles are held and how freely they can move.
This lesson gives you the model chemists use to explain that, and then makes you use it. You will describe how particles sit and travel in each of the three states, name every one of the changes between them, learn to say which of those changes takes energy in and which gives it out, work out why a thermometer stops climbing halfway through melting even though the flame is still on, and explain what creates the pressure inside a sealed container of gas. It is a short list of ideas, and almost every question you will ever be asked about matter is answered from it.
Ebumnobi
- Matter can be classified in terms of the three states of matter. Students should be familiar with states of matter and be able to name each inter-conversion process. They should be able to describe and explain their inter-conversion in terms of how the particles are arranged and their movement. They should understand the energy changes that accompany changes of state.
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Solids, Liquids And Gases. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Which description matches the particles in a liquid? A. Held in a fixed regular pattern and able only to vibrate B. Close together but disordered, sliding past one another C. Far apart and moving rapidly and randomly in all directions D. Far apart and held in a fixed regular pattern Answer: B
- Which process changes a solid directly into a gas without a liquid forming? A. Condensation B. Evaporation C. Sublimation D. Freezing Answer: C
- A pure solid is heated steadily. Why does its temperature stay constant while it is melting? A. No energy is being supplied during that time B. The energy supplied is used to overcome the forces of attraction between particles C. The particles stop moving completely while melting D. The thermometer responds too slowly to record the change Answer: B
- During which change of state do particles move from a fixed regular arrangement into a disordered arrangement in which they are still touching one another? A. Freezing B. Melting C. Boiling D. Condensing Answer: B
- A gas is sealed in a rigid container and then warmed. Why does its pressure increase? A. The individual gas particles become larger B. The particles strike the walls more often and with greater force C. The number of gas particles in the container increases D. The container contracts as it is warmed Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Solids, Liquids And Gases? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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