Temperature Effects Maxwell-Boltzmann distribution curve A Maxwell-Boltzmann distribution curve is a graph that shows the distribution of energies at a certain temperature In a sample of a g...
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Calculating Rates of Reaction To measure the rate of a reaction, we need to be able to measure either how quickly the reactants are used up or how quickly the products are formed The method ...
Collision Theory & Rates Collision Theory When reactants come together the kinetic energy they possess means their particles will collide and some of these collisions will result in chem...
Bond Enthalpy Definitions When bonds are broken or made enthalpy changes take place A chemical bond is a force of attraction between two atoms Breaking the bond requires the input of energy ...
Constructing Hess Cycles In 1840, the Russian chemist Germain Hess formulated a law which went on to be known as Hess’s Law This went on to form the basis of one of the laws of thermodynamics. The ...
Calculating Energy Transferred, Q Measuring enthalpy changes Calorimetry is the measurement enthalpy changes in chemical reactions A simple calorimeter can be made from a polystyrene drinkin...
Enthalpy Level Diagrams The total chemical energy inside a substance is called the enthalpy (or heat content) When chemical reactions take place, changes in chemical energy take place and th...
Enthalpy Change Definitions To be able to compare the changes in enthalpy between reactions, all thermodynamic measurements are carried out under standard conditions These standard condition...
SAT最新发布了机考的完整题目，小编第一时间就带着各位同学一起来看看SAT机考是如何操作的，新sat考试内容及完整题目完整解读！ 完整SAT机考考题 1. 下载安装：下载之后直接安装即可得到模考软件。如果原来安装过...
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08月23日，教育部宣发面向中小学生的全国性学术活动活动名单,名单中共列举出45项学术活动汇总，“自然科学素养类”高达23项！在自然科学素养类比赛中，人工智能、STEM领域赛事占比明显高出其他学科。科研类学术活动...
