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We are going to discuss the vocabulary of chemistry, vocabulary of chemistry.
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The given example is a simple chemical, simple chemical substance that consists of, that substance consists of atoms of only one type, only one type and cannot be split, and cannot be split by a chemical means into a simpler substance which is called as element.
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This is the given example.
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Coming to the second one where we have given the simplest part, simplest part of an element, element that can take part, can take part in a chemical reaction, chemical reaction, it is called as atom.
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Number 3, a thing, a thing consisting of, consisting of two or more things, two or more things combined together, combined together will be called as molecule and molecule can be water, for example, it will be water is a molecule.
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Fourth one is proteins are biological macromolecules, given statement is proteins are biological, biological macromolecules, macromolecules where this statement is the definition of protein, so here we can write this is all about protein.
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Next, fifth is given the mass of an atom, mass of an atom of a chemical element, of a chemical element expressed in, expressed in atomic mass unit, amu, atomic mass unit, so this is called the atomic mass, atomic mass...