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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 |