01:160:161 Study Guide - Comprehensive Final Guide: Chemical Polarity, Valence Electron, Ionic Bonding
Document Summary
Study of composition, structure, and properties of matter and changes that occur in matter. Smallest distinctive units in a sample of matter. Type of matter that has a definite or fixed composition that does not vary from one sample to another. Substance that cannot be broken down into simpler substances in a chemical reaction: ex. Substance made up of atoms of two or more elements with different kinds of atoms: ex. Strongest attractions between particles; has a rigid shape + fixed volume. Weakest attractions; don"t clump together, no fixed shapes or volume. Fixed volume, no fixed shape, free to move. Mixture that has the same composition and properties throughout sample: ex. sugar solution. Varies in composition and/or properties from one part of mixture sample to another: ex. sand and rocks. Provide patterns that can be summarized into scientific laws. Procedure to test hypothesis; measures one variable at a time.
