Rates Of Reaction
Gbogbo ọrọ náà
Some reactions happen in an instant - an explosion takes milliseconds. Others take years - iron rusts slowly in damp air. Understanding what controls the speed of a reaction lets chemists speed up useful processes and slow down harmful ones.
In this lesson you will learn how surface area, concentration, temperature, pressure, and catalysts affect the rate of reaction, all explained through collision theory. You will also explore the classic marble chips practical.
Ebumnobi
- Describe experiments to investigate the effects of changes in surface area of a solid, concentration of a solution, temperature and the use of a catalyst on the rate of a reaction
- Describe the effects of changes in surface area of a solid, concentration of a solution, pressure of a gas, temperature and the use of a catalyst on the rate of a reaction
- Know that a catalyst is a substance that increases the rate of a reaction but is chemically unchanged at the end of the reaction
- Investigate the effect of changing the surface area of marble chips and of changing the concentration of hydrochloric acid on the rate of reaction between marble chips and dilute hydrochloric acid
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Rates Of Reaction. 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.
- According to collision theory, a reaction occurs when particles: A) Touch each other B) Collide with sufficient energy C) Are heated to 100 degrees C D) Are in the same container Answer: B
- Which factor does NOT affect the rate of reaction? A) Temperature B) Surface area C) Colour of reactant D) Concentration Answer: C
- A catalyst works by: A) Increasing the temperature B) Providing a pathway with lower activation energy C) Increasing the concentration D) Being used up in the reaction Answer: B
- Grinding a solid into powder increases the rate because it: A) Increases the activation energy B) Increases the surface area C) Changes the products D) Acts as a catalyst Answer: B
- On a graph of gas volume vs time, a steeper line means: A) A slower reaction B) A faster reaction C) More products formed D) A higher temperature Answer: B
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Rates Of Reaction? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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