1st SEMESTER STUDY GUIDE CHEMISTRY Organization of the Periodic Table. Development of the periodic table (Mendeleev) Reading the periodic table – Periods, Groups (Families), Element Name, Chemical Symbol, Atomic #, Atomic Mass/Weight. Reading the periodic table – Location of metals, nonmetals, & metalloids. Reading the periodic table – How is reactivity related to the # of valence electrons? Trends across the periodic table. (Reactivity & Atomic size) Metals: Location on periodic table, physical vs. chemical properties, & common examples. Nonmetals: Location on periodic table, physical vs. chemical properties, & common examples. Metalloids: Location on periodic table, physical vs. chemical properties, & common examples. Basic Characteristics of Different Groups – Alkali Metals, Alkaline Earth Metals, Transition Metals, Halogens, Noble Gases. States of Matter & Their Properties. Solid – Particle Arrangement, Characteristics, & Types – Crystalline & Amorphous. Liquid – Particle Arrangement & Characteristics - including viscosity. Gas – Particle Arrangement & Characteristics. Changes in State – Melting Point, Freezing Point, Boiling Point, Evaporation, Condensation, & Sublimation. Physical Properties of Matter such as flexibility, texture, malleability, ductility, etc. SI units for mass & volume. Mass – Difference between mass & weight, using a triple-beam balance in the lab. Volume – Two different methods to solve for volume. (Water displacement & Equation) Solubility Chemical Properties of Matter such as reactivity, flammability, pH, and oxidation/corrosion. Evidence that Chemical Reaction has occurred including formation of a precipitate, generation of gas, natural color change, combustion, endothermic/exothermic reaction. Atomic Theory – Identify & compare Dalton, Thomson, Rutherford, Bohr, and Chadwick. Atomic Structure – Nucleus, Electron Cloud, Protons, Neutrons, Electrons, Particle Charges, Particle Locations. Isotopes vs. Ions Classifying Matter Elements Compounds Mixtures (heterogeneous vs. homogeneous) Solutions (saturated vs. unsaturated; dilute vs. concentrated) Formation of Compounds & Molecules through atomic bonding: Valence Electrons Bohr Diagrams Electron Dot (Lewis Dot) Diagrams & the Rule of 8. Ions & Ionic Bonding Covalent Bonds EARTH SCIENCE Minerals Naturally occurring, inorganic, solid, crystals, & consistent ratios of elements. Testing minerals. Color (streak test) Texture Hardness (Moh’s hardness scale) Luster Density Classify Rocks by Observable Properties Grain Size (fine, course, no visible grain) Texture (depends on shape & size of grains) Density Density is mass ÷ volume. Model the Earth & Its Layers Convection Currents Rock Cycle Overall concept & flow of the rock cycle. Igneous, sedimentary, & metamorphic rocks change continually throughout the rock cycle. Characteristics & Formation of the 3 types of rocks. Lava vs. Magma (Extrusive vs. Intrusive; Changes in texture due to rate of cooling) Cycle of weathering, erosion, deposition, compaction, & cementation – Sedimentary rocks. Evidence of Lithospheric Plate Movement Wegener’s theory of plate tectonics initially not accepted by others because he couldn’t explain the cause of plate movement. Land features (Pangaea, mountain ranges, ages of rocks, etc.), fossils, & climate/habitat changes support his theory. Later, fossil records & sea floor spreading support his ideas. Harry Hess & the process of sea-floor spreading. Magnetic “stripes” on the ocean floor, ages of rocks, & molten material along midocean ridges were presented as evidence. Plate Boundaries & Landforms Types of boundaries – divergent, convergent, transform. Boundary type leads to: Mountains Trenches vs. Rift Valleys Volcanoes – Know where they are located & what they can form. Subduction – Density determines which plate is subducted. Faults Types of Stress = Compression, Tension, Shearing Types of Faults = Normal, Reverse, Strike-Slip (Right or Left) Earthquakes Movement of the Earth’s plates causes earthquakes. Mercalli scale, Richter Scale, Moment-Magnitude Scale. Focus vs. Epicenter. Damage & Side Effects - Tsunami, Aftershock, Liquefaction. PHYSICS Motion – Relative to frame of reference & can be shown using graphs, motion maps, etc. Define and Solve for Speed, Velocity & Acceleration – Noting the differences and similarities. Velocity: Speed in a specific direction, or a change in position over time. Measure & calculate speed using distance ÷ time. Interpret distance vs. time graphs. Interpret speed vs. time graphs. SI unit = m/s. Acceleration: A change in velocity over time. Measure & calculate acceleration as a change in speed or direction over time. Can be negative or positive. Can occur with a change in speed and/or direction. SI unit = m/s2. Interpret velocity vs. time graphs. Force: A push or a pull. Solve using mass x acceleration. SI unit = Newtons (N) Friction: Force exerted on two surfaces when they rub together. 4 Types – Sliding, rolling, fluid, & static. Acts in direction opposite to that of object’s motion. Produces heat. Two factors that influence the amount of friction are the type of surfaces & the force used. Gravity: Force that pulls objects toward each other. Influenced by mass and distance. In the absence of air, all objects on Earth accelerate at 9.8 m/s2 due to gravity. Air resistance affects falling objects, slowing down those with greater surface area. Newton’s 1st Law of Motion Objects at rest remain at rest unless acted on by an unbalanced force. Objects in motion remain in motion at a constant velocity unless acted on by an unbalanced force. Known as the Law of Inertia. Inertia: The resistance of an object to a change in its motion or position. More mass means more inertia. Change mass and inertia will change. Newton’s 2nd Law of Motion The acceleration of an object depends upon the mass of the object & the force used. Use the equation Force = Mass x Acceleration to solve for any variable. Understanding the impact/results of manipulating variables in the equation. (Doubling the force leads to an increase in acceleration, etc.) Known as the Law of Acceleration. Newton’s 3rd Law of Motion For every action force, there is an equal and opposite reaction force. Momentum – A measure of mass in motion. Solve using mass x velocity. SI unit = kg m/s Centripetal Force: Force that keeps an object moving in a circular path. Pulls inward. Satellite: Any object that orbits another in space.