Examlex
Which of the following are correctly matched?
Buffer
A substance in a solution that tends to lessen the change in hydrogen ion concentration (pH) that otherwise would be produced by adding an acid or base.
Hydrogen Bonds
Weak bonds between partially positive hydrogen atoms and partially negative atoms (such as oxygen or nitrogen) in different molecules or within the same molecule.
Atomic Mass
The mass of an atom, typically expressed in atomic mass units (amu), representing the total mass of protons, neutrons, and electrons in the atom.
Ionic Bond
A chemical bond that occurs when two ions of opposite charges are linked together by transferring one or more electrons from one atom to the other.
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