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Unit 1 Matter
Term | Definition |
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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, hardness. |
chemical property | a property of matter that describes a substance's ability to participate in chemical reactions |
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 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 |
evaporation | the change of a substance from a 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 broken down into simpler substances by chemical means; all atoms of an element have the same atomic number |
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. |