The smallest part of an element that can be identified as that element is

A material that can easily be hammered into different shapes

Of the following elements, the one that is not an example of a noble gas is

All atoms of the same element have the same

The first person to suggest the existence of atoms was

A positively charged particle is

The element with the smallest atomic number is

Atoms of the same element that have different atomic masses are

The energy levels of an atom contain

Atoms are made up of

Of the following particles, those not found in the nucleus of an atom are

The second energy level of an atom can hold

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