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5th - Chapter 9 A

Chapter 9 vocabulary using book definitions

mass the amount of matter in an object
weight how strongly gravity pulls on an object
volume how much space matter takes up
matter anything that has mass and volume
density the amount of mass for each cubic centimeter of a substance
buoyancy resistance to sinking
element a material that cannot be broken into anything simpler by chemical reactions
metal elements that share the common properties of luster, conductivity, and flexibility
atom the smallest unit of an element that still retains the properties of that element
nucleus the center of an atom
proton a particle with one unit of positive charge each
neutron a particle with no electric charge - it is neutral
electron smaller particles with one unit of negative charge each
molecule particles with more than one atom joined together
malleability the ability to be bent, flattened, or hammered without breaking
ductility the ability to be pulled into thin wires without breaking
corrosion when metals combine with nonmetals from the environment
semiconductor a material that conducts electricity better than a nonmetal, but not as well as a metal
Created by: jewen