define:- 1) atoms 2)molecules 3) SI unit
Answers
Answer:
1) the smallest particle of material it is called atom.
2) two or more atoms in some elements different elements that are bound together its called molecules.
3
Answer:
ATOMS :
An atom is the smallest constituent unit of ordinary matter that constitutes a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.
MOLECULES :
Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.
SI UNIT :
The SI base units are the standard units of measurement defined by the International System of Units (SI) for the seven base quantities of what is now known as the International System of Quantities: they are notably a basic set from which all other SI units can be derived.
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