Matter and Chemistry

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Terms in this set (...)

atom
smallest particle of an element
chemical bond
the force that holds two atoms together
chemical change
a change in matter that produces one or more new substances
chemical property
relates to a substance's ability to undergo changes that transform it into different substances
compound
a substance made up of atoms of two or more different elements joined by chemical bonds
density
the amount of matter in a given space; mass per unit volume
d=m/v
element
any substance that cannot be broken down into simpler substances; made of only one type of atom
matter
anything that has mass and takes up space
mixture
A combination of two or more substances that are not chemically combined
physical change
A change that affects the appearance but not the chemical makeup of a substance (does not change into another substance)
physical property
A characteristic of a pure substance that can be observed without changing it into another substance
solid
matter with definite shape and definite volume
boiling point
the temperature at which a substance changes from a liquid to a gas
gas
matter that has no definite shape or volume
liquid
matter that has a definite volume but no definite shape
melting point
the temperature at which a substance changes from a solid to a liquid
viscosity
A liquid's resistance to flowing
luster
the visual property of something that shines with reflected light
malleability
the property of a metal that indicates that it can be bent and rolled into sheets
metal
an element that is shiny and that conducts heat and electricity well
nonmetal
an element that is a poor conductor of heat and electricity
metalloid
an element that has properties of both metals and nonmetals
conductivity
the ability of a material to allow either heat or electricity to flow through it
precipitate
a solid that forms and settles out of a liquid mixture
molecule
a particle made of two or more atoms bonded together