Photography in 19th century was used as a major form of artistic expressions.

A renewable energy source is

More molecules are returning to the liquid state than are leaving the liquid state. This process is called

An equation describes a relationship where

As a solid undergoes a phase change to a liquid, it

Newton’s third law of motion states that forces occur in matched pairs that act in opposite directions between two different bodies.  This happens

One-half liter of water is the same volume as

The energy supplied to a system in the form of heat, minus the work done by the system, is equal to the change in internal energy. This statement describes the  

The specific heat of copper is 0.093 cal/gC, and the specific heat of aluminum is 0.22 cal/gC.  The same amount of energy applied to equal masses, say, 100 g of copper and aluminum, will result in

The heat involved in the change of phase from solid ice to liquid water is called