Catalysts Catalysis?is the process in which the rate of a chemical reaction is increased, by adding a substance called a?catalyst A catalyst increases the rate of a reaction by providing the reacta...
Activation Energy For a reaction to take place, the reactant particles need to overcome a minimum amount of energy This energy is called the?activation energy (Ea) In?exothermic reactions?the react...
Rate of Reaction: Concentration & Pressure Concentration The more?concentrated?a solution is, the?greater?the number of?particles?in a given volume of solvent An increase in?concentration?cause...
Rate of Reaction: Collision Theory Reaction rate The?rate of a reaction?is the speed at which a chemical reaction takes place and has units?mol dm-3?s-1 The rate of a reaction can be calculated by:...
Indicators Indicators?are substances that change colour when they are added to acidic or alkaline solutions When choosing the appropriate indicator, the pH of the equivalence point is very importan...
pH Titration Curves What are pH titration curves Titration is a technique used in neutralisation reactions between acids and alkalis to determine the concentration of the unknown solution It involv...
Strong & Weak Acids & Bases Strong and weak acids can be distinguished from each other by their: pH value?(using a pH meter or universal indicator) Electrical conductivity Reactivity pH An ...
在我們還為美本申請(qǐng)系統(tǒng)開放而歡呼！韓國(guó)AP官網(wǎng)悄悄更新了2023年AP報(bào)考相關(guān)的安排。雖然報(bào)名還沒開始，但相關(guān)信息已公布得十分詳細(xì)，下面我們一起來(lái)提前了解下！AP考試韓國(guó)官網(wǎng)2023報(bào)名即將開啟！ 2023年韓國(guó)AP報(bào)...
The pH Scale The pH scale is a numerical scale that shows how?acidic?or?alkaline?a solution is The values on the pH scale go from 1-14 (extremely acidic substances have values of below 1) All acids...
