EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:3.2.3 Catalysts
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:3.2.3 Catalysts Catalysts & Rates Catalysts are substances which speed up the rate of a reaction without themselves being altered or con...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:3.2.3 Catalysts Catalysts & Rates Catalysts are substances which speed up the rate of a reaction without themselves being altered or con...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:3.2.2 Explaining Rates Explaining Rates Increasing the number of successful collisions means that a greater proportion of reactant particles...
2022年AMC10A卷中国区考试于11月11日(周五)正式结束,考试结束后,很多同学反映今年的试题难度增加,有些同学则认为难度与去年持平,但由于每个人的水平不一样,对试题难度的感知带有自己的主观性,不可一概而...
Practical: Investigating the Effects of Exercise Measuring breathing There are four main ways that breathing can be scientifically measured. These include: Tidal volume - this is the volume of air ...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:3.2.1 Measuring Rates Measuring Rates You should be able to describe experiments to investigate the effect of surface area, concentration, t...
Variations in Breathing Rate & Heart Rate During exercise, muscle contraction occurs more frequently, requiring more energy The rate of aerobic respiration increases to meet the increase in ene...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:3.1.4 Practical: Investigating Temperature Changes Practical: Investigating Temperature Changes Aim: To perform a calorimetry study of the reaction...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:3.1.3 Energetics Calculations Calculate Heat Energy Change In order the calculate heat energy changes you need to know the mass of the subst...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:3.1.2 Calorimetry Calorimetry Calorimetry is a technique used to measure changes in enthalpy of chemical reactions There are two types of ca...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记:3.1.1 Exothermic & Endothermic Exothermic & Endothermic The changes in heat content can be determined and measured with a thermomete...
Calculating Cardiac Output Cardiac output (CO) is the term used to describe the volume of blood that is pumped by the heart (the left and right ventricle) per unit of time An average adult has a ca...
ECGs & Diagnosing CVD Electrocardiography can be used to monitor and investigate the electrical activity of the heart Electrodes that are capable of detecting electric signals are placed on the...
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