Nuclear Model of the Atom
⚛️ NUCLEAR MODEL OF THE ATOM ⚛️ Cambridge IGCSE Physics - Complete Theory & Formulas 📌 SECTION 19.1: THE ATOM 🔬 What is an Atom? An atom is the smallest unit of a chemical element that retains the properties of that element. Atoms are incredibly small - approximately 100 million atoms can fit across the width of your fingernail! 💡 Key Concept: Although atoms are the smallest units of elements, they are composed of even smaller subatomic particles: protons, neutrons, and electrons. 🎯 Structure of an Atom Nucleus (+) e⁻ e⁻ e⁻ e⁻ Basic Atomic Structure Figure: Simplified model showing nucleus at center with electrons in orbits An atom consists of two main components: Nucleus - The centr...