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Atoms and Bonding
Term | Definition |
---|---|
ionic bond | The attraction between oppositely charged ions. |
covalent bond | A chemical bond formed when two atoms share electrons. |
polar bond | A covalent bond in which valence electrons are shared unequally. |
nonpolar bond | A covalent bond in which valence electrons are shared equally. |
element | The simplest pure substance that cannot be broken down into other substances. |
atom | The smallest particle of an element. |
valence electrons | Electrons involved in bonding between atoms. They are held loosely by the atom. |
atomic number | The number of protons in the nucleus of an atom. |
period | A row across the periodic table. |
ductile | Metals that can be pulled into thin strands or wires. |
malleable | Metals that can be rolled into thin sheets or beaten into shapes. |
theory | A well tested idea that explains a wide range of observations. |
model | Physical, mental, visual, and other representations of an idea. |