Law of Conservation of Mass

Definition

The Law of Conservation of Mass states that matter cannot be created or destroyed in an isolated system. In other words, the total mass before a chemical reaction is equal to the total mass after the reaction.

Related terms

Closed System:

A system where neither matter nor energy can enter or leave - it's like having a locked room for rearranging your furniture.

Open System:

A system where both energy and matter can transfer between the system and its surroundings - this would be if you left your door open while rearranging your furniture.

Isolated System:

A theoretical concept where neither energy nor matter can enter or exit – imagine if your room was sealed off from the rest of universe while you were moving around your furniture!