Chemistry Of Life Flashcards
Smallest unit of matter that retains properties of an element
Atom
Positively charged particles in the nucleus of an atom
Protons
Neutral particles in the nucleus of an atom
Neutrons
Negatively charged particles surrounding the nucleus in layers
Electrons
of protons
Atomic number
of protons + avg # of neutrons in an atom
Atomic mass
Atoms of the same element differing in the # of neutrons
Isotopes
Atom that has lost or gained electrons
Ion
Bond between oppositely charged ions
Ionic bond
Bond between atoms sharing electrons
Covalent
Attraction of an atom in a bond for electrons
Electronegativity
Equal sharing of electrons in a covalent bond
Non polar covalent bonds
Unequal sharing of electrons in a covalent bond
Polar covalent bond
Weak bond between a hydrogen atom and a electronegative atom (like oxygen or nitrogen)
Hydrogen Bond