Question

definition of atoms, molecules, elements and compounds




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Answer 1

An atom is a particle of matter that characterizes a chemical element. ... A compound is a substance that is made up of two or more different elements that are chemically joined, such as H2O,CO,NaCl . Note: All compounds are molecules, but not all molecules are compounds.

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Answer 2

Answer:

definitions of

atoms:-the smallest particle of a chemical element that can exist.

molecules:-a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

elements:-A chemical made up of only one kind of atom is called an element. ... Some elements, such as gold, are found in their pure form on Earth. Others, like iron, have to be separated from other substances.

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