EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.4.4 Rusting of Iron Rusting of Iron Rusting is a chemical reaction between iron, water and oxygen to form hydrated iron(III)oxide Oxygen a...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.4.3 Order of Reactivity Order of Reactivity Carbon and the reactivity series mnemonic Carbon is an important element and has its own place...
注意！NEC全美经济挑战赛将于11月30日截止报名！ NEC是美国最具影响力的高中生经济学学术活动，由美国经济教育学会CEE举办。经过20余年的发展与积累，每年有超过15.000名学生受邀参与。其学术活动和参与学生都得...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.4.2 Metal Displacement Reactions Metal Displacement Reactions The reactivity of metals decreases going down the reactivity series. This me...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.4.1 Metals Reacting with Water & Acids Metals Reacting with Water & Acids The chemistry of the metals is studied by analysing thei...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.3.5 The Greenhouse Effect The Greenhouse Effect When shortwave radiation from the sun strikes the Earth’s surface it is absorbed and re-em...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.3.4 Carbon Dioxide from Thermal Decomposition Carbon Dioxide from Thermal Decomposition Thermal decomposition is the term used to describe...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.3.3 Combustion Combustion Combustion is the scientific word for burning All combustion reactions involve a chemical change in which oxygen...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.3.2 Practical: Determine the % of Oxygen in Air ractical: Determine the Percentage of Oxygen in Air Aim: To determine the percentage of oxygen in...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.3.1 Composition of Air Composition of Air The proportion of gases in the air has not changed much in 200 million years About four fifths o...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.2.1 Group 7 (Halogens) Physical Properties The elements in group 7 are known as the halogens These are fluorine, chlorine, bromine, iodine...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：2.1.1 Group 1 (Alkali Metals) How Alkali Metals React with Water The group 1 metals are known as the alkali metals They form alkaline soluti...
