What is Matter? • Matter is anything that occupies space and has a mass
Classification of matter • According to the state(solids, liquids gases and plasma) • According to its composition(elements, Compounds, and mixtures(homogeneous and heterogeneous)
Elements and Compounds • Elements 1. Simplest form of matter that has a unique set of properties 2. Examples: C, N, O • Compounds 1. Composed of two or more elements in a definite proportion 2. Examples: H 2 O, SO 2, CO 2
States of matter Solids Liquids Gases Has a definite shape Has indefinite shape No definite shape Definite volume No definite volume Not easily compressed Easily compressed Not easily compressed
Cotton Candy – Sugar is composed of 3 substances carbon, Hydrogen and Oxygen
Chemical Symbols – use to abbreviate elements • • Hydrogen –H Tungsten –W - Wolfram Mercury – Hg - Hydrargyrum Note: Elements derive their name from English/Latin words
Mixtures – composition of two or more substances • Homogeneous 1. Has a uniform composition through out 2. Individual components can not be identified 3. Example : salt dissolved in water • Heterogeneous 1. Does not have a uniform composition 2. Individual components can be identified 3. Example: mixture of salt and sand