Chapter 2 Vocab Flashcards
Protons
particle with a positive charge, in the nucleus of an atom.
Neutrons
a substance found in the nucleus of every atom except hydrogen.
Ions
atom that has lost or gained electrons.
Molecules
groups of atoms held together by chemical bonds.
Isotopes
atoms that have a different number of neutrons.
Polar Molecules
the distribution of electrons between atoms is not even.
Hydrogen Bond
partial positive and partial negative charges are attracted to each other between water molecules.
Covalent Bond
two atoms where electron pairs are shared.
Ionic Bond
the attraction between oppositely charged ions.
Solute
a substance that can be dissolved by a solvent.
Solvent
a molecule that has the ability to dissolve other molecules.
Half-Life
time the living body eliminates one half the quantity
Atomic #
the number of protons in the nucleus of an atom of the element.
Electrons
a negatively charged component of an atom.
