Edexcel IGCSE Maths 复习笔记 1.17.2 Division (non-Calc)
Edexcel IGCSE Maths 复习笔记 1.17.2 Division (non-Calc) (Non-calculator) division – more methods Most students will have seen short division (bus stop method) and long division and there is often c...
AQA A Level Biology复习笔记1.1.5 The Glycosidic Bond
Forming the Glycosidic Bond To make monosaccharides more suitable for transport, storage and to have less influence on a cell’s osmolarity, they are bonded together to form disaccharides and...
AQA A Level Biology复习笔记1.1.4 Glucose
The Two Forms of Glucose The most well-known carbohydrate monomer is glucose ATP Glucose has the molecular formula C6H12O6 Glucose is the most common monosaccharide and is of central importa...
AQA A Level Biology复习笔记1.1.3 Monosaccharides
Monosaccharides: Common Examples Sugars can be classified as reducing or non-reducing; this classification is dependent on their ability to donate electrons Reducing sugars can donate electr...
AQA A Level Biology复习笔记1.1.2 Biological Molecules: Reactions
Biological Molecules: Reactions A covalent bond is the sharing of two or more electrons between two atoms The electrons can be shared equally forming a nonpolar covalent bond or unequally (w...
Edexcel IGCSE Maths 复习笔记 1.16.1 Using a Calculator
Edexcel IGCSE Maths 复习笔记 1.16.1 Using a Calculator Why the fuss about using a calculator? GCSE Mathematics goes beyond using the basic features of a calculator and explores many of the special ...
Edexcel IGCSE Maths 复习笔记 1.15.1 Best Buy
Edexcel IGCSE Maths 复习笔记 1.15.1 Best Buy How do you tackle “Best Buy” problems? You may need a range of skills… Decide on a suitable comparison – eg total cost, cost/year, cost/m2 etc) Be consi...
AQA A Level Physics复习笔记2.5.1 Collisions of Electrons with Atoms
Ionisation & Excitation Ionisation of an atom is: The removal, or addition, of an electron from, or to, an atom when given sufficient energy Excitation of electrons is: When an electron ...
AQA A Level Physics复习笔记2.4.1 The Electronvolt
The Electronvolt The electronvolt is a unit which is commonly used to express very small energies This is because quantum energies tend to be much smaller than 1 Joule The electronvolt is de...
