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Science
California Science
Grade 5
e-Glossary
N
List of Words for Letter āNā
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nanotechnology
science that works with materials at the atomic or molecular level
nephron
small individual filters within the kidneys
nervous system
the organ system that controls all other body systems
neutralization reaction
the reaction that occurs when an acid and a base react to form water and salt
newton
a basic unit that measures a force, such as gravity
noble gases
the nonmetallic elements helium, neon, argon, krypton, xenon, and radon
nonmetals
a group of elements that are poor conductors of heat and electricity
nonvascular
containing no plant tissue through which food or water moves
nucleus
the structure that controls all activity within a cell
nutrient
any substance that is useful to an organism