General, Organic, Biological Chemistry. (Smith) Exam 1 Ch 1-4 (2023 Update)

Chemistry - ANS-the study of matter—its composition,properties, and transformations Matter - ANS-anything that has mass and takes up volume (stuff) The Solid State - ANS-Has a definite volume Maintains shape regardless of its container Particules lie close together in a regular pattern The Liquid State - ANS-Has a definite Volume Takes the shape of its container Particles are close together but can move past one another The Gas State - ANS-Has no definite volume, assumes volume of its container Has no definite shape,assumes shape of its container Particles are very far apart and move around randomly physical properties - ANS-can be observed or measured without changing the composition of the material physical change - ANS-alters the material without changing its composition chemical properties - ANS-determine how a substance can be converted into another substance. chemical change - ANS-the chemical reaction that converts one substance into another All matter can be classified as either - ANS-a pure substance or a mixture pure substance - ANS-composed of only a single component (atom or molecule). It has a constant composition, regardless of sample size or origin of sample Cannot be broken down by a physical change Mixture - ANS-Composed of more than one component they can have varying composition( any combination of solid liquid and gas) Can be separated by a physical process Element - ANS-a pure substance that cannot be broken down by a chemical change. Compound - ANS-a pure substance formed by chemically joining two or more elements Every measurement is composed of a ______ and a _____. - ANS-number and unit Continues...