Name: ___________________ Chapter 2: Matter and Change Guided Notes Section 2.1 Properties of Matter 1. Properties used to describe matter can be classified as _______________ or _______________. A. Extensive Properties: Extensive property – a property that depends on the _____________________________________ Examples: ______________ , __________________ a. mass – a measure of the ________________________________ the object contains. b. volume –a measure of the ___________________________ by the object. B. Intensive Properties: Intensive property – a property that depends on the _____________________________________ ______________________________________________________________________________ Examples: ________________________________________________________________ Physical Properties Physical property - a quality or condition of a substance that can be observed or measured without changing the substance’s ____________________. Examples: ________________________________________________________________ States of Matter What are three states of matter? a. _________________ b. _________________ c. _________________ Property Definite mass Definite shape Compressible Molecular Drawing Examples Solid Liquid Gas States of Matter continued: - Solid fixed shape and volume, incompressible -Liquid fixed volume, takes the shape of its container -Gas takes the volume and shape of its container Phase Changes Melting _____________ _____________ Condensation _____________ _____________ Freezing _____________ _____________ Deposition _____________ _____________ Evaporation _____________ _____________ Sublimation _____________ _____________ *Boiling: Evaporation occurring beneath the liquid’s surface. Physical vs Chemical Physical Change - some properties of a material change, but the ______________________________ ________________________________ Examples: ____________________________________________________________________ Section 2.2 Mixtures Substance - matter that has ____________________________________________________ Examples (Pure substances): ____________________________________________________ Mixture - a physical ____________________________________________________ What is the difference between a substance and a mixture? Mixtures can be classified as _______________________________________________ _______________________________________________ A _______________________________ mixture is a mixture in which the ____________________________________ ________________________throughout. Examples: ________________________________________________________________________________________________ Heterogeneous mixture: a mixture that is _____________________________________ in composition; components are not evenly distributed throughout the mixture Examples: ________________________________________________________________________________________________ *Note: Mixtures can be physically separated Separation Methods for Mixtures _________________ - separates a ____________ from a _____________ in a heterogeneous mixture Distillation - separate dissolved solids from a liquid by using ____________ and _______________. What is chromatography? Give an example of how it is used. Section 2.3 Elements and Compounds Elements The ___________________________. Cannot be ____________________ into simpler substances. Building blocks of all matter. More than 100 known elements. Represented by chemical symbols. Compounds A substance that contains ____________________________________________________. Can be ______________________ into simpler substances Compounds have different properties from the individual substances. (Ex: H2O -> liquid O2 -> gas H2 -> gas) Section 2.4 Chemical Properties and Chemical Changes Chemical property - a quality or condition of a substance that can be observed with _____________ ____________________of the substance Chemical change - a change that produces matter with a ____________________________ than the original matter. Atoms _________________ themselves into new combinations. Examples of chemical changes: _______________________________________________________ What is the difference between a physical change and a chemical change? Recognizing a Chemical Change ____________________________________ ____________________________________ ____________________________________ ____________________________________ The Law of Conservation of Mass In any chemical or physical change, mass is ________________________________________ Mass is CONSTANT