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5th - Chapter 9 A
Chapter 9 vocabulary using book definitions
Term | Definition |
---|---|
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 |