13.3 The Nature of Solids

What is the strongest material in the world?

• Steel.

• Synthetic plastic.

• Fullerene nanotubes

The general properties of solids reflect the orderly arrangement of their particles and the fixed locations of their particles.

• True

• False

The melting point (mp) is the temperature at which a solid changes into a ........................

• gas

• liquid

• plasma

The freezing point (fp) is the temperature at which a liquid changes into a .......................

• gas

• liquid

• solid

The melting and freezing points of a substance are at the same temperature.

• True

• False

In general, ionic solids have ................ melting points because relatively strong forces hold them together.

• high

• low

• very low

Molecular solids have relatively ..................... melting points

• high

• low

• very high

Not all solids melt

• True

• False

The particles are arranged in an orderly, repeating, three-dimensional pattern called a ........................

• gas

• liquid lattice

• crystal lattice

The shape of a crystal reflects the arrangement of the particles within the solid.

• True

• False