What is the term that defines the smallest piece of a crystal that shows the shape of that type of crystal?

The correct answer to this open question is the following.

The term that defines the smallest piece of a crystal that shows the shape of that type of crystal is "unit cell."

In the atomic world, the smallest portion of a crystal lattice is a unite cell. A unit cell shows the 3D or three-dimensional pattern of the crystal. So this unite cell can repeat itself to form the crystal lattice. There are cubic cells, monoclinic cells, tetragonal cells, orthorhombic, cells, and rhombohedral cells.

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates