Chemistry OCR

HideShow resource information

ENTHALPY

WHAT IS CHEMICAL ENERGY?

Chemical energy is a special form of potential energy that lies within chemical bonds. Chemical bonds are forces of attraction that bind atoms together in a compound. When chemicals react to form new substances, bonds break in reactants and new ones are formed as products are made. This process changes the chemical energy or the atoms.

ENTHALPY

Enthalpy (H) is the heat content thats stored in a chemical system.

Impossible to measure directly the enthalpy of reactants or products. However, we can measure the energy absorbed or released to surrondings during chemical change. Form of energy can vary. Sometimes is…

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »