GCSE Chemistry - Atoms & Ions | Protons, Neutrons, Electrons

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This video is suitable for:
- All tiers
- All exam boards
- Triple and combined science

*** WHAT'S COVERED ***
1. Introduction to Atoms
* The fundamental nature of atoms as the particles constituting all matter.
* The vast quantity of atoms present in everyday materials, including biological cells.
2. Atomic Structure Overview
* The main components of an atom: a central nucleus and orbiting electrons.
* The arrangement of electrons in shells or energy levels around the nucleus.
3. Subatomic Particles Explored
* Identification of the three main subatomic particles: protons, neutrons, and electrons.
* Comparison of the relative masses of these particles.
* Comparison of the relative electrical charges of these particles.
4. Atomic Dimensions and Internal Composition
* The typical scale of an atom's radius (e.g., nanometres).
* The understanding that atoms are predominantly empty space.
* The extremely small size of the nucleus in relation to the overall atomic volume.
5. Electrical Neutrality and Ion Formation
* Explanation of how atoms maintain electrical neutrality.
* The process of ion formation: how atoms become charged by gaining or losing electrons, forming positive or negative ions.
6. Elements, The Periodic Table, and Nuclear Symbols
* Introduction to elements as unique categories of atoms.
* Understanding nuclear symbols as presented in the periodic table, covering elemental symbols, atomic numbers, and mass numbers.
7. Determining Subatomic Particle Counts
* Utilising the atomic number to ascertain the number of protons (and thereby identify an element).
* Using the atomic number to find the number of electrons in a neutral atom.
* Calculating the number of neutrons from the mass number and atomic number.

*** CHAPTERS ***
0:00 What are Atoms?
0:34 Basic Atomic Structure: Nucleus and Electron Shells
1:01 Protons, Neutrons, and Electrons
1:18 Relative Mass
1:38 Relative Charge
2:33 Atomic Dimensions
3:29 Atoms & Ions
5:02 Periodic Table & Nuclear Symbols
6:03 Calculating No. of Protons, Neutrons, and Electrons

*** PLAYLISTS ***






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