Atoms and Molecules long 3 Flashcards

1
Q

What is IUPAC ?

A

The International Union of Pure and Applied Chemistry is an international scientific organization which approves names of elements, symbols and units.

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2
Q

What is Atomic Mass ?

A

/ The mass of an atom of a element is known as its
atomic mass.
/ In 1961 IUPAC accepted atomic mass unit (u) to
express atomic and molecular mass of elements
and compounds

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3
Q

What is a molecule ?

A

A molecule is a group of two or more atoms that are chemically bonded together and capable of a independent existence.

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4
Q

What is one [u]

A

1.66 x 10^-27 Kg

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