physical sci prelim

• george lamaitre proposed bigban theory
• bigbang starts with the single point called primordial atom
• atom smallest consituent unit of ordinary matter
• matter anything that occupies space and mass
• democritus "atomos" proposed the idea of atom
• john dalton proposed atomic theory
• democritus - prosposed the idea of atom
• john dalton proposed the atomic theory
• joseph john thomson discovered the electron
• neils bohr modern atomic model
• ernest rutherford gold foil experiment
• stellar means stars
• nucleosynthesis means creation atomic nuclei
• stellar nebula birth place of stars