Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 1.9.1 Explaining Conductivity Conductivity of Covalent Compounds Electric current is the flow of?charged particles This usually refers to electrons, but it c...
Radioactive Decay Radioactive decay is defined as: The spontaneous disintegration of a nucleus to form a more stable nucleus, resulting in the emission of an alpha, beta or gamma particle Ra...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 1.8.1 Metallic Bonding Metallic Bonding Metal atoms are held together strongly by metallic bonding Within the?metal lattice, the atoms lose their valence ele...
Required Practical: Inverse Square-Law for Gamma Radiation Aim of the Experiment The aim of this experiment is to verify the inverse square law for gamma radiation of a known gamma-emitting ...
Safe Handling of Radioactive Sources It is very well known that radioactive sources are dangerous if handled improperly When choosing a source to work with, the following characteristics are...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 1.7.4 Giant Covalent Structures Giant Covalent Structures Covalent bonding can be responsible for substances that have many different structures and therefor...
Background Radiation Background radiation describes the low level of radiation present in the surroundings at all times There are two types of sources of background radiation: Natural source...
Inverse-Square Law of Gamma Radiation As an electromagnetic wave, gamma radiation shares many of the same wave properties as light Light sources which are further away appear fainter because...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 1.7.3 Simple Molecular Structures Simple Molecular Structures Simple molecular structures have covalent bonds joining the atoms together, but intermolecular ...
