click below
click below
Normal Size Small Size show me how
Unit 1: Matter
Term | Definition |
---|---|
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 |
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 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 a gas |
sublimation | the process in which a solid changes 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 up of atoms of two or more different elements joined by chemical bonds |
heterogeneous mixture | composed of dissimilar components |
homogeneous | describes something that has a uniform structure |
atom | the smallest unit of an element that maintains the chemical properties of that element |
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 |