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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 a given volume 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 a liquid to a gas.
Sublimation The process in which a solid changes directly into a gas.
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.
Compound A substance made up of atoms of two or more different elements joined by chemical bonds.
Heterogeneous Mixture Composed of dissimilar components.
Homogeneous Mixture Describes something that has a uniform structure or composition throughout.
Atom The smallest unit of an element that maintains the chemical properties of that element.
Created by: pg428739
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