Solids

According to the kinetic-molecular theory, particles in solids 

• vibrate around fixed points.

• are loosely packed.

• move rapidly around each other.

• are arranged randomly.

The three states of matter of a particular substance, in order of the strength of intermolecular forces from least to greatest, are

• solid, liquid, gas

• liquid, solid, gas

• gas, liquid, solid

• gas, solid, liquid

Which is an example of a non-crystalline (amorphous) solid?

• emerald

• quartz

• ice

• glass

Which of the following is not a physical property of crystalline solids?

• definite shape

• definite melting point

• low rate of diffusion

• high compressibility

Amorphous solids have no definite melting point because

• their particles are constantly changing positions.

• their particles are arranged randomly.

• their particles are tightly packed.

• their particles move around each other.

Which of the following is not a type of crystal?

• metallic crystal

• lattice crystal

• covalent network crystal

• ionic crystal

Which is an example of a polar covalent molecular crystal?

• H₂O

• H₂

• NaCl

• CCl₄