explain the term atom, molecules, element and compound with example.
Answers
An atom is a particle of matter that characterizes a chemical element. It is the smallest part of ordinary matter. ... 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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Atom :
An atom is a particle of matter that characterizes a chemical element. It is the smallest part of ordinary matter. It is made from particles called protons, neutrons and electrons called the subatomic particles.
Molecules :
A molecule is a substance that contains two or more atoms chemically joined, such as H2, O2
Element :
An element is a substance that is made entirely of one type of atom. For example, the element sodium is made up of only sodium atoms.
Compound :
A compound is a substance that is made up of two or more different elements that are chemically joined, such as H2O, CO, Na cl
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