In chemical reactions, sets of compounds interact with each other to form new compounds. Chemists use equations to describe these interactions. Like mathematical equations, chemical equations conform to a set of rules. This allows equations to provide detailed information about a reaction.
Eating, putting gas in a car and throwing a log on a campfire all involve adding energy to a system. In each case, the energy is added in the form of covalent bond*s that hold atoms together in molecules.
This illustration explores the relationship between the temperature and volume* of an ideal gas
On Earth, matter exists in one of three states: solid, liquid, or gas. Matter in each state exhibits distinct characteristics. Gases, for example, do not have a fixed volume* or shape.
