Second Law

What is the second law?

The second law of thermodynamics says that energy is lost as heat, making reactions not 100% efficient. Additionally, it states that it is impossible to heat up cold objects without a force of heat energy.

Real Life Examples:

A hot cup of tea placed on the table will cool due to heat lost from the cooler surroundings. However, according to the first law, no energy is destroyed here as the energy is transferred into the air as steam.

You want to eat your leftover pizza that was in the fridge hot. The pizza won’t be warmed until an energy source (oven/microwave) is used. This pertains to the second part of the definition.