IN BRIEF Primordial nucleosynthesis: the initial formation of elements after the Big Bang. Origin of matter: explained by the Big Bang model. Carbon chemistry: the foundation of life on Earth with sugar, proteins, lipids. First molecule: the helium hydride ion (HeH+) could be the very first formed element. Complexification of atoms: evolution of hydrogen atoms … Read more
IN BRIEF Physics: study of forces, energy, and the properties of objects. Chemistry: analysis of matter, molecules, and chemical reactions. Physical chemistry: intersection between physics and chemistry, focusing on the physical aspects of chemical systems. Physical transformations: changes of state (solid, liquid, gas) without modification of chemical composition. Chemical transformations: rearrangements of molecules, leading to … Read more
IN BRIEF Definition: An atom is the smallest unit of matter that retains the properties of a chemical element. Composition: Atoms consist of a nucleus, containing protons and neutrons, surrounded by electrons. Dimensions: The size of an atom is extremely small, about one ten-millionth of a millimeter. Properties: The number of protons and electrons determines … Read more