Forms of Energy

 Forms of energy related to changes in matter are kinetic, potential, chemical, electromagnetic, electrical, and thermal

 Kinetic energy is the energy of matter in motion  Potential energy is the energy an object has because of its position

 (EG) A rolling bowling ball has KE and can do work by knocking down pins.

 (EG) when a diver climbs up a diving board, he/ she increases her PE

 Is energy stored in a chemical bond EG: Methane

 It is released when the bond is broken and new bonds are formed

 It is a form of potential energy

 When a chemical change occurs bonds are broken and new bonds are formed, if it’s exothermic some of the chemical energy is transformed and released in other energy forms

 Electromagnetic is a form of energy that travels through space in the form of waves. 

 Can also cause physical changes

 (EG) Radio, infrared, light, x-rays, microwaves

 (EG) the microwave can change a frozen block of spaghetti into a hot meal, this is a physical change

 Electrical is the energy of electrically charged particles moving from one place to another

 Electrodes are metal strips that conduct electricity

 Electrolysis: Is a chemical change that involves electricity. Two metal strips are placed in a solution but do not touch. Each electrode is connected to a battery. When the energy begins to flow, atoms of one kind lose electrons at one electrode in the solution. At the other electrode, atoms of a different kind gain electrons, and a new substance results. 

 During a chemical change chemical energy may be changed to other forms of energy. Other forms of energy may also be changed to chemical energy

 (EG) Photosynthesis: Electromagnetic energy to chemical energy

 (EG) Burning a fuel: Chemical to electromagnetic and thermal