GCSE Chemistry - Types of Covalent Structures: Simple Molecular & Giant Covalent Structures скачать в хорошем качестве

GCSE Chemistry - Types of Covalent Structures: Simple Molecular & Giant Covalent Structures

⭐️ Check out our website https://www.cognito.org/ ⭐️ ** WHAT'S COVERED ** 1. Simple Molecular Substances These substances have low melting and boiling points because only weak intermolecular forces need to be broken, not the strong covalent bonds within the molecules. The larger the molecule, the stronger the intermolecular forces, leading to higher melting and boiling points, as seen in the halogens. They do not conduct electricity as they have no free electrons or charged particles. 2. Giant Covalent Structures Composed of a vast number of non-metal atoms joined by strong covalent bonds in a regular, repeating lattice. They have very high melting and boiling points because a large amount of energy is needed to break the strong covalent bonds throughout the structure. Generally, they do not conduct electricity because they lack free-moving charged particles (graphite is a key exception). 3. Examples of Covalent Structures Simple molecular substances include chlorine and ammonia. Giant covalent structures include diamond, graphite, and silicon dioxide (silica). ** CHAPTERS ** 0:00 Introduction 0:49 Properties of Simple Molecular Substances 1:09 Melting and Boiling Points of Simple Molecular Substances 2:31 Electrical Conductivity of Simple Molecular Substances 2:56 Properties of Giant Covalent Structures 3:16 Examples of Giant Covalent Structures 3:54 Structure of Silicon Dioxide ** PLAYLISTS **    • KS3 Biology      • KS3 Chemistry      • GCSE Maths (9-1)      • GCSE Biology (9-1)      • GCSE Chemistry (9-1)      • GCSE Physics (9-1)      • A-Level Biology   #GCSE #Chemistry #study #revision #school #exam #AQA #OCR #Edexcel #IGCSE