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...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.7.4 Giant Covalent Structures Giant Covalent Structures Covalent bonding can be responsible for substances that have many different struct...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.7.3 Simple Molecular Structures Simple Molecular Structures Simple molecular structures have covalent bonds joining the atoms together, bu...
