Energy
| Formula / Notation | E (joules); E = mc²; E_k = ½mv²; E_p = mgh |
|---|---|
| Also Known As | Thermodynamic energy; joule (unit); work capacity; heat; enthalpy; Gibbs energy; internal energy (U) |
What is Energy?
Energy is the capacity to do work or transfer heat. In chemistry, it appears in many forms: chemical energy (stored in bonds), thermal energy (heat), kinetic energy (motion), potential energy (position), electrical energy, and radiant energy (light). The SI unit of energy is the joule (J). The law of conservation of energy states that energy cannot be created or destroyed, only converted between forms.
Formula & Notation
Other Names / Synonyms: Thermodynamic energy; joule (unit); work capacity; heat; enthalpy; Gibbs energy; internal energy (U)
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Energy is the capacity to do work or transfer heat. In chemistry, it appears in many forms: chemical energy (stored in bonds), thermal energy (heat), kinetic energy (motion), potential energy (position), electrical energy, and radiant energy (light). The SI unit of energy is the joule (J). The law of conservation of energy states that energy cannot be created or destroyed, only converted between forms.
Foundation of all thermodynamic and kinetic calculations; fuel combustion engineering; battery and cell design; photovoltaic and solar energy; chemical synthesis optimisation; biological metabolism; nuclear energy
No direct hazard from the concept. High-energy processes (explosions, high-voltage electricity, nuclear reactions) present specific hazards.
The formula or notation for Energy is: E (joules); E = mc²; E_k = ½mv²; E_p = mgh