Rate Of Reaction
Gbogbo ọrọ náà
Some reactions are over in a flash, like an explosion, while others, like iron rusting, take years. The rate of reaction measures how fast reactants turn into products, and chemists can speed it up or slow it down by changing the conditions.
In this lesson you will learn what rate of reaction means, how collision theory explains it, and how concentration, surface area, temperature and catalysts change the rate. You will also see how the slope of a graph shows the rate as a reaction proceeds.
Ebumnobi
- Describe the effect on the rate of reaction of: (a) changing the concentration of solutions (b) changing the pressure of gases (c) changing the surface area of solids (d) changing the temperature (e) adding or removing a catalyst, including enzymes.
- State that a catalyst increases the rate of a reaction and is unchanged at the end of a reaction.
- Describe practical methods for investigating the rate of a reaction including change in mass of a reactant or a product and the formation of a gas.
- Interpret data, including graphs, from rate of reaction experiments.
- [Supplement] Describe collision theory in terms of: (a) number of particles per unit volume (b) frequency of collisions between particles (c) kinetic energy of particles (d) activation energy, E a.
- [Supplement] Describe and explain the effect on the rate of reaction of: (a) changing the concentration of solutions (b) changing the pressure of gases (c) changing the surface area of solids (d) changing the temperature (e) adding or removing a catalyst, including enzymes using collision theory.
- [Supplement] State that a catalyst decreases the activation energy, E , of a reaction a.
- [Supplement] Evaluate practical methods for investigating the rate of a reaction including change in mass of a reactant or a product and the formation of a gas.
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 Rate 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.
- For a reaction to occur, particles must collide with: A. Any energy at all B. At least the activation energy C. No energy D. Equal masses Answer: B
- Increasing the concentration of a reactant increases the rate because: A. The particles are heavier B. There are more frequent collisions C. The activation energy falls D. The temperature rises Answer: B
- Powdering a solid reactant speeds up the reaction because it: A. Lowers the temperature B. Increases the surface area C. Adds a catalyst D. Removes collisions Answer: B
- A catalyst increases the rate of reaction by: A. Being used up B. Raising the activation energy C. Lowering the activation energy D. Cooling the mixture Answer: C
- On a graph of product formed against time, the rate is greatest where the slope is: A. Flattest B. Steepest C. Negative D. Zero 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 Rate Of Reaction? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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