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A&P Unit 2
Unit 2 :)
| Term | Definition |
|---|---|
| Energy | Ability to do work |
| Potential energy | Stored energy (bonds) |
| Kinetic energy | energy of motion |
| Chemical energy | stored in bonds (ATP) |
| Electrical energy | flow of electrons |
| mechanical energy | movement of parts |
| radiant energy | particle waves |
| thermal energy | heat energy |
| element | fundamental units of matter |
| atoms | building blocks for elements |
| 96% of body made of these 4 elements | Carbon, Hydrogen, Oxygen, Nitrogen |
| Nucleus includes___ | protons and neutrons |
| outside of nucleus | electrons |
| atomic number | the number of protons that an atom has |
| atomic mass number | sum of protons and nuetrons |
| isotopes | atoms of same element but differ in number of neutrons |
| atomic weight | close to mass number of most abundant isotope, reflects natural isotope variation |
| Radioisotope | Heavy isotope, unstable, decomposes to more stable isotope |
| Molecule | 2 or more like atoms combined chemically |
| Compound | 2 or more different atoms chemically combined |
| Anabolic | Synthesis reactions |
| Catabolic | Dissociate from other atoms, broken bonds |
| Electron shells | electrons occupy these energy levels |
| Ionic bond | Stealing/Giving of an electron |
| Covalent | Bond in which that the electrons are shared |
| Polar | Unequal share of electrons |
| Nonpolar | Equal share of electrons |
Created by:
rrodriguez7056
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