AQA A Level Physics復習筆記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復習筆記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 ...
Edexcel IGCSE Maths復習筆記 1.14.1 Exchange Rates
Edexcel IGCSE Maths復習筆記 1.14.1 Exchange Rates Simplifying exchange rate questions Use ratios! Put exchange rates in?ratio?form (use more than one line if necessary) Add lines for prices/costs U...
AQA A Level Physics復習筆記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復習筆記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 ...
AQA A Level Physics復習筆記1.1.1 SI Units
SI Base Quantities There is a seemingly endless number of units in Physics These can all be reduced to six base units from which every other unit can be derived These seven units are referre...
AQA A Level Physics復習筆記1.2.1 Sources of Uncertainty
Random & Systematic Errors Measurements of quantities are made with the aim of finding the?true value?of that quantity In reality, it is impossible to obtain the true value of any quanti...
2022紐約時報中學生社論競賽詳解，獲獎作品將在紐約時報刊登、全球發表！
國際社會風云變幻的今天，對于時事熱點話題分享個人見解、加以評論正在成為新一代世界公民的必備素養，大名鼎鼎的紐約時報系列比賽之社論學術活動已經拉開帷幕，優秀的你還不快上車？ 有什么事情使你憤怒？ 你希...
AQA A Level Chemistry復習筆記8.1.1 Required Practical 7
Required Practical 7 Required Practical 7: Measuring the rate of a reaction There are two ways to measure the rate of reaction By an initial rate method By a continuous monitoring method &nb...
Edexcel IGCSE Maths復習筆記 1.13.2 Standard Form - Harder
Edexcel IGCSE Maths復習筆記 1.13.2 Standard Form - Harder Standard form – harder questions Make sure you are familiar with:Roots & Indices – Basics Standard Form – Basics Harder problems often ...
AQA A Level Chemistry復習筆記8.2.1 Required Practical 11
Required Practical 11 Required Practical 11: Carry out simple test-tube reactions to identify transition metal ions in aqueous solution This practical covers a number of key laboratory skill...
AQA A Level Chemistry復習筆記8.3.1 Required Practical 10a
Introduction to required practical 10a Required Practical 10a: Preparation of an organic solid and a test of its purity This practical covers a number of key laboratory skills use appropriat...
