EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 復(fù)習(xí)筆記：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 復(fù)習(xí)筆記：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 復(fù)習(xí)筆記：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 復(fù)習(xí)筆記：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 復(fù)習(xí)筆記：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 復(fù)習(xí)筆記：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 復(fù)習(xí)筆記：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 復(fù)習(xí)筆記：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 ...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 復(fù)習(xí)筆記：2.6.6 Practical: Prepare Copper(II)Sulfate Practical: Prepare Copper(II)Sulfate Aim: To prepare a pure, dry sample of hydrated copper(II) sulfate c...
