Chapter 1
Introduction:
Matter and Measurement
Section 1.1
The Study of Chemistry
Chemistry• The study of matter and the
changes it undergoes
Matter• Physical material of the world• Has mass• Takes up space
Matter 116 Elements Atoms
(submicroscopic)
Atom + Atom = Molecule
Property• Any characteristic that allows
us to recognize and distinguish
• Can be physical or chemical
Physical Property Chart
Chemical Property Chart
Always Remember…
• We study chemistry at the submicroscopic level in order to explain macroscopic events
Section 1.2
Classifications of Matter
States of Matter
• 3 Forms
•Solid
•Liquid
•Gas
Three States of Matter
Pure Substance
Element Compound• An element cannot be decomposed into
simpler substances
• A compound is a relatively stable combination of two or more chemically bonded elements in a specific ratio.
• Can be decomposed
Mixtures
• Mixtures consist of two or more substances
• Homogenous mixtures are uniform throughout. – Air, sea water, and a nickel coin
• Heterogeneous mixtures vary in texture and appearance throughout the sample. – Rocks, wood, polluted air, and muddy water
Pure Substances
• Fixed elemental composition
Mixtures
• Varying composition