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Friendly Bio. Ch 2
Vocabulary Terminology for Chapter 2 in Friendly Biology
| Question or Term | Answer or Definition |
|---|---|
| atom | Small bits of matter that everything is made of |
| Ionic Bonds | form when atoms transfer electrons from one to another |
| Covalent Bonds | form when atoms share electrons |
| Ionization | process of gaining or losing electrons |
| 4 elements vital to life | Carbon, Hydrogen, Oxygen, & Nitrogen |
| Nucleus | contains subatomic particles known as protons and neutrons |
| Central portion of an atom | Nucleus |
| electrons | subatomic particles that circle the nucleus |
| Electron arrangement | determines the behavior of an element |
| Atomic number | is used to determine number of protons or electrons an atom of a particular element has |
| orbital or shell | area of an atom where electrons exist |
| Stable elements | have their outermost electron orbital full |
| Reactive or unstable elements | have their outermost electron orbital unfilled |
| compounds | form when atoms join together to gain stability |
| carbon atoms | desire to form four bonds |
| oxygen atoms | desire to form two bonds |
| hydrogen atoms | desire to form one bond |
| nitrogen atoms | desire to form three bonds |
| Maximum number of electrons in orbital shell | 2 in the first, 8 in the rest |
| Noble gases | family of elements most stable |