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...
Electrical Activitiy in the Heart Control of the basic heartbeat is myogenic, which means the heart will beat without any external stimulus This intrinsic rhythm means the heart beats at around 60 ...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.7.5 Tests for Water Tests for Water Water can be identified using a chemical test and/or a physical test Chemical test for water An...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.7.4 Tests for Anions Tests for Anions Testing for Anions Table Exam Tip When it comes to qualita...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.7.3 Tests for Cations Tests for Cations Metal cations in aqueous solution can be identified by the colour of the precipitate they f...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.7.2 Flame Tests Flame Tests Metal ions produce a colour if heated strongly in a flame Ions from different metals produce different colours...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.7.1 Tests for Gases Tests for Gases Many reactions in the lab produce gases which then need to be tested The table below indicates ...
