Chemistry Midterm Exam

Chapter 2 Terms and Key Concepts

Terms SI Units Base Units Derived Units Density Average Deviation Percent Error Accuracy Precision Dimensional Analysis (Factor Label Method) Significant Figures

Key Concepts Be able to make metric to metric conversions using the factor label method. Be able to make metric to English conversions using the factor label method. Be able to make mixed unit conversions using the factor label method. Be able to make conversions involving cubed units. Be able given a data set to calculate the mean, average deviation, and percent error. Be able to determine the number of significant figures give a number and units. Be able to multiply, divide, add and subtract numbers and give the answer in the proper number of significant figures. Know and be able to describe the different branches of Chemistry. Chapter 3 Terms and Key Concepts

Terms Matter melting Extensive properties freezing Intensive properties evaporation Pure substance condensation Mixture sublimation Homogeneous mixture deposition Heterogeneous mixture triple point Elements critical point Compounds Chemical Change Physical Change Chemical Properties Physical Properties Solutions Solvent Solute Solid Liquid Gas Plasma Kinetic Molecular Theory

Key Concepts Be able to determine if a substance is a pure substance, mixture, element, compound, homogeneous mixture or heterogeneous mixture. Be able to distinguish among physical changes and chemical changes, and physical and chemical properties. Be able to recognize the key properties of solids, liquids, gases, and plasma. Be able to compare and contrast how molecules move in each of the phases of matter and the intermolecular forces associated with each. Be able to calculate density, mass, or volume give two of the three variables. Be able to describe intermolecular and intramolecular forces. Be able to label a phase diagram identifying the different regions and transitions. Be able to identify the phase changes as either exothermic or endothermic. Chapter 4 Terms and Key Concepts

Terms Atom Elements Electrons Protons Nucleus Charge Atomic Mass Unit (amu) Atomic Mass Atomic Number Mass Number Isotope Neutron Nuclide Radioactivity Radiation Alpha Beta Gamma

People Greeks Dalton Democritus J.J. Thomson Rutherford

Key Concepts Be able to calculate or determine the number of protons, neutrons, and electrons in a given element or isotope given a set of data. Be able to calculate the atomic mass give the abundance and mass of a set of isotopes. Be able to write the nuclide symbol or identify the isotope of an element given appropriate data. Be able to solve nuclear equation problems. Chapter 5 Terms and Key Concepts

Terms Electromagnetic Radiation Wavelength Frequency Amplitude Quantum Orbital Photon Photoelectric Effect Ground State Quantum Mechanical Model Quantum Numbers n, principle (shell) l, energy sublevel (subshell) m, magnetic s, spin Pauli Exclusion Principle Hund’s Rule Valence Electrons Dot Structures Electron Configuration

People Plank Bohr Einstein De Broglie Heisenberg Schrodinger

Key Concepts Be able to solve wavelength, frequency, and energy problems. Be able to write electron configuration notations long and short form. Be able to write orbital and dot notations. Be able to answer quantum number questions about number of electrons, subshells, orbitals, and valence electrons.