Rates Of Reaction
Akopọ
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.
Awọn Afojusun
- 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
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Rates Of Reaction. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- 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
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Rates Of Reaction? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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