Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.2.2 Half-Life
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.2.2 Half-Life Half-Life It is impossible to know when a particular unstable nucleus will decay But the rate at which the activity of a sample decreases can b...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.2.1 Activity & Decay
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.2.1 Activity & Decay Activity and Decay Objects containing radioactive nuclei are called?sources?of radiation Sources of radiation decay at different?rat...
IGCSE 與 GCSE具體的區(qū)別是什么呢？
普遍印象中，英國(guó)學(xué)生學(xué)GCSE，國(guó)際生就學(xué)IGCSE，但這兩個(gè)課程具體的區(qū)別是什么呢？ GCSE全稱General Certificate of Secondary Education，中等教育普通證書，針對(duì)13-15歲學(xué)生，通常用兩年學(xué)習(xí)8-12門課程。 IGCSE...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.6 Detecting Radiation
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.6 Detecting Radiation Detecting Radiation It is important to regulate the exposure of humans to radiation The amount of radiation received by a person is c...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.5 Decay Equations
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.5 Decay Equations Decay Equations Radioactive decay events can be shown using a?decay equation A decay equation is similar to a chemical reaction equation ...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.4 Core Practical: Investigating Radiation
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.4 Core Practical: Investigating Radiation Core Practical 13: Investigating Radiation Aim of the Experiment ?The aim of this experiment is to investigate th...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.3 Types of Radiation
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.3 Types of Radiation Types of Radiation Unstable Nuclei and Radiation Some atomic nuclei are?unstable This is because of an imbalance in the forces within ...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.1 Atomic Structure
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.1 Atomic Structure Atomic Structure Atoms are the building blocks of?all matter They are incredibly small, with a radius of only 1 × 10-10?m This me...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.2 Isotopes
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.2 Isotopes Isotopes Although the number of protons in a particular element is always the same, the number of?neutrons?can be different Isotopes?are atoms o...
