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Unit 1: Matter

TermDefinition
Matter anything that has mass and takes up space
Physical property a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness
Chemical property a property of matter that describes a substance´s ability to participate in chemical reactions
Physical changes a change of matter from one form to another without a change in chemical properties
Chemical changes a change that occurs when one or more substances change into entirely new substances with different properties
Extensive property a property that depends on the extent or size of a system
Intensive property a property that does not depend on the amount of matter present, such as pressure, temperature, or density.
Ductility the ability of a substance to be hammered thin or drawn out into a wire
Malleability the ability of a substance to be hammered or beaten into a sheet
Volume a measure of the size of a body or region in three-dimensional space
Compressibility the measure of how much given volume of matter decreases when placed under pressure
Density the ratio of the mass of a substance to the volume of the substance; often expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases
Evaporation the change of a substance from liquid to a gas
Sublimation the process in which a solid changes directly into a gas (the term is sometimes also used for the reverse process)
Vaporization the process by which a liquid or solid changes to a gas
Element a substance that cannot be separated or broken down into simpler substances by chemical means; all atoms of an element have the same atomic number.
Compound a substance made of atoms or two or more different elements joined by chemical bonds
Hetergeneous mixture composed of dissimilar components
Homogeneous mixture describes something that has a uniform structure or composition throughout
Atom the smallest unit of an element the maintains the chemical proper-ties of that element
Created by: ev339777
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