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Friendly Bio. Ch 2

Vocabulary Terminology for Chapter 2 in Friendly Biology

Question or TermAnswer 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
Created by: CDM2KK