Chemistry Past Paper PDF

PHYSICIST  All elements are made of identical atoms that can combine in fixed ratios They differ in mass color blindness/ and properties Daltonism 1803...

PHYSICIST  All elements are made of identical atoms that can combine in fixed ratios They differ in mass color blindness/ and properties Daltonism 1803 English chemist Law of Conservation of Mass Eaglesfield, United Kingdom September 6, 1766 JOHN DALTON July 27, 1844  All elements are made of identical atoms that can combine in fixed ratios They differ in mass color blindness/ and properties Daltonism 1803 English chemist Law of Conservation of Mass Eaglesfield, United Kingdom September 6, 1766 JOHN DALTON July 27, 1844  Physicist known for discovering the ELECTRON 1897 British physicist Nobel Prize in Physics Cathode ray tube experiment 18 December 1856 Sir Joseph John Thomson 30 August 1940  A positive charge spread throughout the atom Electrons Atoms are indivisible Negative Rutherford’s nuclear model J.J. Thomson's Plum Pudding model 1904  Proposing the planetary model of the atom atomic and New nuclear Zealand physics. physicist 30 August 1871 ERNEST RUTHERFORD 19 October 1937 Rutherford's findings laid the groundwork for which subsequent Bohr's model of the atom Alpha and beta Physics radiation PROTON 1911 The nucleus is small and occupies only a tiny fraction of the atom Rutherford's model of the atom is often referred to as the: Nuclear model  What led Rutherford to discover? Atoms are mostly empty space with a dense nucleus  Proposing the quantum mechanical model of the atom Electrons occupy specific energy levels Nobel Prize in or shells Physics 1922 student Manhattan Project Danish physicist Ernest Copenhagen, Rutherford Denmark October 7, 1885 NIELS HENRIK DAVID BOHR November 18, 1962  ORBIT THE NUCLEUS IN FIXED ENERGY LEVELS In the Bohr model, surrounded by electrons: electrons attraction provided by positively electrostatic forces charged nucleus around the positively atom as a small charged nucleus travel in atomic circular orbits structure model Bohr’s Theory – Bohr’s Atomic 1913 Model  Quantum mechanics Schrödinger's Nobel Prize in equation is Physics 1933 fundamental fundamental Waves of probability results in quantum theory Superposition a Nobel Prize– winning Austrian The wave function and naturalized of a quantum Irish physicist system Erdberg, cat Vienna, Austria August 12, 1887 ERWIN RUDOLF JOSEF ALEXANDER SCHRÖDINGER January 4, 1961  particles can pass through energy barriers Quantum Tunneling standing waves. Where: E: constant of proportionality. 1926 Ψ: wave function of the quantum system. "Quantum- Wave Model" August 12, 1887 Schrödinger's atomic model (1926 AD) January 4, 1961 I am vital