Name: Period: Chemistry Semester 1 Final Review 2015 Unit 1: Nature of Science and Lab Safety 1. Define chemistry. 2. Define and give an example of an observation and an inference. 3. Identify the dependent and independent variables in the following hypothesis: “If I share a hat with Alfred, I will get head lice.” 4. Define hypothesis, theory and law. How are each unique? Unit 2: Measurement 5. Define mass, volume, and density. 6. What is the formula to calculate density? 7. Complete the following table about the SI system. SI Unit SI Symbol Tool(s) to Measure Time Volume Amount of Substance N/A Distance Temperature Mass 8. Define precision and accuracy. How do the two concepts differ? Petersen 1 Name: Period: 9. Define and give an example of a qualitative observation and a quantitative observation. 10. How can you determine the number of significant figures in a number? Give examples. 11. Complete the following table about calculations. Explanation Example Addition/Subtraction with Sig Figs Multiplication/Division with Sig Figs Addition/Subtraction with Scientific Notation Multiplication with Scientific Notation Division with Scientific Notation 12. How do unit conversions within the metric system work? Give examples. 13. How are mass and weight different? Unit 3: Matter and Classification 14. Complete the following table about types of properties. Definition Physical Properties Chemical Properties 15. Complete the following table about types of changes. Definition Physical Change Chemical Change Examples Evidence Petersen 2 Name: 16. Complete the following table about types of matter. Definition Period: Example Pure Substance Mixture Element Compound Heterogenous Homogenous 17. Make a flow chart to relate matter, pure substances, mixtures, compounds, elements, heterogeneous mixtures, and homogeneous mixtures. Unit 4: Nomenclature 18. Summarize the rules for naming ionic compounds. 19. Summarize the rules for naming covalent compounds. 20. Complete the following table about compounds names and formulas. Formula Name Formula Name Zinc chloride AgBr Carbon tetrahydride C2H4 Na3PO4 Magnesium sulfide CoF2 Barium nitrite Ca3P2 NH4Cl Triphosphorus pentachloride SiBr6 Iron II sulfate NO2 Petersen 3 Name: Unit 5: Atomic Structure and Nuclear Change 21. How did the model of the atom progress through time? Period: 22. Complete the following table about the subatomic particles. Subatomic Particle Charge 23. Complete the following table using a Periodic Table. Isotopic Atomic Atomic Mass Notation Number Mass Number Location #p #n #e Tungsten Tin 24. Define radiation and explain why an atom will go through radiation. 25. Complete the following table about radiation. Greek Emitted Stopped by Symbol Effect on mass # Effect on atomic # Alpha Beta Gamma 26. Define half-life and draw a graph to represent the concept of half-life. 27. Define fission and fusion. Compare and contrast the two concepts. Unit 6: Electron Configuration 28. Draw the Bohr model for Be, N, Na, S, and Ar. Petersen 4 Name: 29. Draw the Lewis structure for He, B, P, K, Se, C, I, and Ar. Period: 30. State the three rules of electron configuration (Aufbau’s Principle, Pauli Exclusion Principle, and Hund’s Rule). 31. Use the box and arrow method to do electron configurations for Li, N, and V. 32. Write out the electron configuration for Ne, Mg, and Fe. 33. Give the valence electron configuration for Ca, Br, Bi, and Sn. Unit 7: Periodicity 34. Describe where each family is found on the periodic table: Alkali Metals Metals Alkaline Earth Metals Nobel Gasses Halogens Nonmetals Metalliods Transition Metals 35. Complete the following table about trends in the Periodic Table. Definition Group Trend Period Trend Atomic Size Electronegativity Ion Size Ionization Energy Metallic Properties Petersen 5