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Unit 1: Matter
Term | Definition |
---|---|
matter | Matter can thus be defined as anything that mass and takes up space. |
physical property | Physical property is a characteristic that can be observed or measured without changing the identity of the substance. |
chemical property | A chemical property relates to a substance's ability to undergo changes that transform it into different substances. |
extensive property | EXT properties depend on the amount of matter that is present. |
intensive property | INT properties do not depend on the amount of matter present. |
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 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 a liquid to 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 | An element is a pure substance that cannot be broken down into simpler, stable substances and is made of one type of atom |
compound | A compound is a substance that can be broken into simple stable substances. Each compound is made from the atoms of two or more elements that are chemically bonded. |
heterogeneous mixture | Mixtures that are not uniform throughout are said to be heterogeneous`. |
homogeneous mixture | Mixtures that are uniform in composition are said to be homogeneous. |
atom | An atom is the smallest unit of an element that maintains the chemical identity of that element. |