Forms of Energy

Bellringer• Salt is an ionic compound containing anions and

cations. When dissolved in bodily fluids (water), salts easily ___________________. Why does this happen?

 • Because ions are CHARGED particles, all salts are

___________________.

• Is an acid a proton donor or proton acceptor?

• A pH of 8.5 is acidic or basic?

• A pH of 2.7 is acidic or basic?

Amazing Energy Facts• https://www.youtube.com/watch?v=TnNixMosUIo

Concepts of Matter

• Physical Changes: DO NOT alter the basic nature of the substance

• Chemical Changes: DO alter the composition of the substance

ENERGY• Massless and does not take up space

Chemical Energy

Chemical Energy• Stored in bonds of chemical substances

• When bonds are broken energy is released

• Examples?

Chemical Energy

Electrical Energy

Electrical Energy• From the movement of charged particles

• Generated when ions (charged particles) move across cell membranes

• Other examples?

Electrical Energy• From the movement of charged particles

• Generated when ions (charged particles) move across cell membranes

Electrical Energy

Electrical Energy

Electrical Energy

Mechanical Energy

Mechanical Energy

Mechanical Energy• DIRECTLTY involved in moving matter

• Musculoskeletal movement

Radiant Energy

Radiant Energy• Travels in waves

• X-rays, infrared radiation (heat), visible light, radio and UV waves

• Light energy stimulates retina in the eye

• UV light – vitamin D