Download Exam 1 Study Guide - Introductory Chemistry I | CHE 1101 and more Study notes Chemistry in PDF only on Docsity! Introductory Chemistry I Test 1 Study Guide Chapter 1 - Basic definitions – matter, elements, atoms, molecules, pure substance, compounds, mixtures - Three states of matter and their characteristics (solids, liquids, gases) - Law of Constant Composition - Mixtures – heterogeneous vs. homogeneous, solutions - Physical properties vs. chemical properties - Intensive vs. extensive properties - Physical changes vs. chemical changes - Separation of mixtures – filtering, distillation, physical separation - The Scientific Method - Units of measurement – metric system, SI base units, metric prefixes and conversions, mass, temperature (3 scales – K, C, F and conversions between each), derived SI units (volume, density) - Uncertainty in measurement – precision and accuracy, significant figures, scientific notation, significant figures in calculations - Dimensional analysis – conversion factors (Know metric conversions and basic conversions) Beware of cubic conversions – cube number and unit! I will put uncommon conversion factors on the test. Chapter 2 - Dalton’s postulates and corresponding laws Law of Constant Composition Law of Conservation of Mass Law of Multiple Proportions - Cathode rays and cathode ray tubes presence of subatomic particles - Key players: Thomson (CRT) – charge/mass of an electron, Millikan (oil drop experiment) – mass and charge of an electron - Radioactivity (Becquerel, Curies, Rutherford) – α-particles (2+), β-particles, (1-) and γ-rays - Plum pudding model (Thomson) - Rutherford experiment discovery of a nucleus in the center of an atom - Protons, neutrons, electrons, electronic charge, atomic mass unit, angstroms, isotopes, nuclides, atomic number, mass number, atomic weight, average atomic masses (know how to calculate) - Periodic table – periodic trends, groups (columns), common group names, periods (rows), metals, metalloids, nonmetals (know location of each), atomic number, atomic symbol, atomic weight, # protons, neutrons, and electrons in each element bases on atomic number and weight - Molecules/Molecular compounds – usually only nonmetals
