Here are the evaluations for each statement:
-
Particles in a solid are packed tightly.
True - In a solid, particles are closely packed together, giving solids a definite shape and volume. -
Particles in a solid have thermal energy.
True - Even though particles in a solid are tightly packed, they still possess some thermal energy, which allows them to vibrate around fixed positions. -
Particles in a solid are completely still.
False - Particles in a solid are not completely still; they vibrate around their fixed positions due to the thermal energy they possess.