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5th Science - Ch.9

Terms in this set (20)

mass
the amount of matter in an object
weight
A measure of the force of gravity on an object
volume
The amount of space an object takes up
matter
Anything that has mass and takes up space
density
the amount of mass in a given volume
buoyancy
the resistance to sinking
state of matter
solid, liquid, gas
element
A substance that cannot be broken down into simpler substances
metals
elements that share properties such as shiny luster, conductivity, and flexibility
atom
Smallest unit of an element
nucleus
Center of an atom
proton
positively charged particle
neutron
particle with no charge
electron
negatively charged particle
molecules
Groups of two or more atoms held together by chemical bonds
Malleability
The ability of a substance to be hammered or rolled into sheets
Ductility
The ability to be pulled into thin wires
corrosion
the deterioration of a metal due to a chemical reaction in the environment
semiconductor
an element or compound that conducts electric current better than an insulator does but not as well as a conductor does
surface tension
the force that acts on the surface of a liquid and that tends to minimize the area of the surface
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