26.14. N http://www.ck12.org
26.14 N
natural resource
Anything people can use that comes from nature.
net force
Overall force acting on an object that takes into account all of the individual forces acting on the object.
neutralization reaction
Reaction of an acid and a base that produces water and a salt, both of which are neutral in acidity.
neutron
Electrically neutral atomic particle inside the nucleus of an atom.
newton (N)
SI unit of force, equal to the amount of force that causes a mass of 1 kilogram to accelerate at 1 m/s^2 (kg·m/s^2 ).
Newton’s first law of motion
Law stating that an object’s motion will not change unless an unbalanced force acts on the object.
Newton’s second law of motion
Law stating that the acceleration of an object equals the net force acting on the object divided by the object’s
mass.
Newton’s third law of motion
Law stating that every action has an equal and opposite reaction.
noble gas
Nonmetal in group 18 of the periodic table that has eight valence electrons (or two in the case of helium) and
is unreactive.
nonmetal
Class of elements that do not conduct electricity.
nonpolar
Not having oppositely charged ends, as in nonpolar covalent bond or nonpolar covalent compound.
nonrenewable resource
Natural resource that is limited in supply and cannot be replaced except over millions of years.
nuclear energy
Energy released in nuclear reactions.
nuclear fission
Splitting of the nucleus of an atom into two smaller nuclei.
nuclear fusion
Fusing of two or more small nuclei to form a single, larger nucleus.
nucleic acid
Biochemical compound (either DNA or RNA) that contains oxygen, nitrogen, and phosphorus in addition to
carbon and hydrogen and is made up of one or two long chains of smaller molecules called nucleotides.
nucleus
Tiny region in the center of an atom that contains protons and neutrons and makes up almost all of an atom’s
mass.