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the sum of the relative atomic masses of the elements that make up the molecule.
a measure of the ability of an atom to attract electrons to itself; measure of the tendency...
atoms of the same element that contain equal numbers of protons (same atomic number) but...
6,02 x 1023 particles or objects. Also known as the number of particles in one mole...
a temporary unstable high energy composition of atoms representing a transition step between the...
all matter is made of particles (molecules or atoms) that are in constant motion.