A-Level 2022大考放榜时间已公布！
A-Level 2022大考放榜时间已公布！最近，英国政府公布了截止到4月21日，英格兰各大考局的GCSE、AS、A-level考试报名临时数据。根据英政府汇总，今年英格兰夏季大考（GCSE、AS、A-level）的报考数据有以下几个特征...
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...
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...
AQA A Level Physics复习笔记2.3.1 The Four Fundamental Interactions
The Four Fundamental Interactions There are four fundamental interactions, or fundamental forces, that exist. These are: Gravity Electromagnetism Strong Nuclear (or Strong Interaction) Weak ...
AQA A Level Physics复习笔记2.2.1 Hadrons
Baryons & Mesons Hadrons Hadrons are the group of subatomic particles that are made up of quarks Therefore, hadrons can feel the strong nuclear force There are two classes of hadrons: Ba...
AQA A Level Physics复习笔记2.1.1 Atomic Structure
Atomic Structure The atoms of all elements are made up of three types of particles: protons, neutrons and electrons. Protons and neutrons are found in the nucleus of an atom while electrons ...
