ࡱ> uwt \3bjbj̵ hצצ&-H\\\GGGGGGGHKGQ\\\\`G`G```dG`\G``NAF"3*|C08F\G0-HCp L` L`F`F\\\ [:   Chemistry (1) 1st semester Name _____ 1. Observation a. mathematical % that you are off from the correct answer ______2. Procedure b. property that makes water bubble up on a surface ______3. Conclusion c. information gathered during an experiment ______4. Hypothesis d. exposed area of a substance ______5. Surface Tension e. steps to complete an experiment ______6. Surface Area f. summary of what happened, what you learned ______7. Percent Error g. a prediction of what will happen in an experiment ______8. Beaker a. used to hold substances (narrow neck) ______9. Graduated cylinder b. used to help mix materials _____10. Stirring rod c. used to measure the mass of a substance _____11. Electronic balance d. used to accurately measure substances _____12. Erlenmeyer flask e. used to hold substances ( wide neck) _____13. Mixture a. matter that is the same throughout _____14. Compund b. matter that is different throughout _____15. Element c. one single type of atom, there are over 100 different ones _____16. Homogeneous d. two or more substances mixed but not chemically bonded _____17. Heterogeneous e. has mass and occupies space _____18. Matter f. two or more substances that are chemically bonded _____19. Periodic table a. horizontal rows on the periodic table _____20. Element symbol b. one or two letters used to represent an element _____21. Period c. vertical columns on the perodic table _____22. Family (group) d. useful tool in chemistry shows the elements arrangement _____23. Chemical property a. tearing paper _____24. Physical property b. color, shape, melting point _____25. Chemical change c. if a substance will react or not with another _____26. Physical change d. souring of milk _____27. Mass number a. positive subatomic particle in an atom _____28. Proton b. neutral subatomic particle in an atom _____29. Electron c. the number of neutrons + number of protons _____30. Neutron d. the number of protons and electrons in neutral atom _____31. Atomic number e. negative subatomic particle in an atom _____32. Alkaline Earth metals a. column 17 or group 7A _____33. Alkali Metals b. column 1 or groups 1A _____34. Halogens c. column 18 or group 8a _____35. Nobel gases d. column 2 or group 2A _____36. Metals a. element can act like either a metal or nonmetal _____37. Nonmetals b. elements located to the left of the zigzag line _____38. Transition metals c. B group of elements, have metallic properties _____39. Metalloids d. elements located on the right of the zigzag line _____40. Inner transition metals e. two rows at the bottom of the periodic table _____41. Ionic bond a. measure of an atoms attraction for an electron _____42. Covalent bond b. two atoms bonded with same electronegativity _____43. Electronegativity c. bond where electrons are shared _____44. Polar bond d. two atoms bonded with different electronegativity _____45. Nonpolar bond e. bond where electrons are transferred _____46. Ionic compound a. two _____47. Molecular compound b. compound composed of a metal and nonmetal _____48. Binary c. more than 2 elements _____49. Ternary d. method of telling what elements and how many in a compound _____50. Chemical formula e. compound composed of two nonmetals CHAPTER 1 MATTER AND ENERGY What is the chemical symbol for the following elements. Label each as metal or nonmetal. Magnesium Sulfur Cobalt 2. Identify each of the following as an element, compound, heterogeneous mixture, or homogeneous mixture. Chocolate peanut butter cup ice cream Table salt dirt in water iron milk Identify each of the following as a physical property or a chemical property color ability to react with oxygen ability to not react with chlorine mass oil and water do not mix mercury melts at -39 C 4. Classify each of the following as a physical or chemical change: a. tearing a piece of paper b. aluminum combining with oxygen to form aluminum oxide c. milk souring d. water evaporating What is a pure substance? Give an example. CHAPTER 2 MEASUREMENTS AND CALCULATIONS 1. Convert the following: a. 6.49L to mL b. 3.47cm to m c. 904kg to g 2. What is the formula for density? A 4.4ml sample has a mass of 8.4g. What is the density of the substance? What is the volume of a sample that has a mass of 34.7g and a density of 7.9g/ml? Calculate the following to the correct number of significant digits: 8.93g/ 4.5mL = Calculate the following to the correct number of significant digits. 67.3g - 9.000000002g = How many significant figures are in: 0.0056g 0.2005g 3.89 x 10 -3 g 800cm 800. Cm CHAPTER 3 ATOMS: THE BUILDING BLOCKS OF MATTER What are the parts to the modern atomic theory, how is it different from Daltons atomic theory and why? 2 . NameSymbolMass # Atomic ## of Neutrons# of Electrons# of Protons Oxygen-158108 Ag4787136Uranium-23823892 How many electrons are in O 2- Ca 2+ N 3- For an isotope of an element which subatomic particles are the same? Which are different? CHAPTER 4 ARRANGEMENT OF ELECTRONS IN ATOMS Write the electron configuration for Ca P 3- I For each of the substances above write the Noble Gas configuration: How many valence electrons does Iodine have? CHAPTER 5 THE PERIODIC LAW 1. What element is in the 4th period group 7A? 2. What element is in the 1st period group 8A? 3. What element has an atomic number of 56? 4. What family is in group 1A? 5. Which element is more metallic K or Fe? 6. Which element is a gas at room temperature F or Al? 7. In going from left to right in any period of the periodic table, the size of the atoms tend to ___________. Why? 8. How do neutral atoms atomic radius to compare to it ionic radius if it is a positive ion? 9. How does the ionization energy compare going down a group? Why? 10. Which is larger? Mg or Mg 2+ 11. Which has a higher 1st ionization energy? K or Br 12. How many valence electrons maximum can an atom have? How many does Carbon have? Lithium? CHAPTER 6 CHEMICAL BONDING What is the difference between an ionic and covalent bond? How does each form? 2. Indicate the range in electrognegativity values for each of the following types of bonds: a. nonpolar b. polar c. ionic 3.. When two atoms share electrons and have different electronegativities, what type of bond is it? When two atoms that share electrons but also have the same electronegativity what type of bond is it? Classify the compounds as ionic, polar covalent or nonpolar covalent using the electronegativity values to help classify. a. CH ___________ b. CaO __________ c. SO2___________ d. NiF ___________ e. Cl2 __________ f. CH4 ____________ g. KI _____________ 6. In a Lewis structure, what do the dots represent? How do we determine which element is the central element of the Lewis Structure? 7. Draw the electron dot structure for each of the following compounds and determine the molecular geometry and molecule polarity of the molecule. a. SO3 CH3Cl H2O 8. What are the types of intermolecular forces, what types of molecules have each and what is their relative strengths. 9.. Which forces are stronger intermolecular or intramolecular ? How do you know? CHAPTER 7 CHEMICAL FORMULAS AND CHEMICAL COMPOUNDS Write the correct name the following compounds AlCl3 ______________________ CaCO3 ____________________ SO _______________________ Si2O3 ______________________ MgSO4 _____________________ PbSO4 ____________________ Fe2S3 ____________________ Write the correct chemical formula for the following compounds. Dinitrogen trichloride _____________________________ Sodium carbonate ___________________________________ Lithium phosphate __________________________________ Strontium chloride ____________________________ Tetrasulfur pentaflouride ________________________________ Iron(II ) Nitrate _________________________________________ 3. Find the formula mass of each of the following: Na2S MgSO4 Ammonium Phosphate 4.. How many moles in 245.72g of CaI2 5.. How many grams in 34.5 moles of H2O How many grams of Al(NO3)3 in 9.86 * 10 26 molecules? A form of phosphorus called red phosphorus is used in match heads. When 0.62g of red phosphorus burns , it combines with 0.80g of oxygen. What is the empirical formula of this oxide? . Oxalic acid is a compound used in cosmetics and paints. The empirical formula is HCO2, if the molar mass of oxalic acid is 90.04g/mol, what is the molecular formula? CHAPTER 8 CHEMICAL EQUATIONS AND REACTIONS 1. Balance the following chemical equations. a. ____ Na + ___ H2O ! ____ NaOH + ___ H2 b. ____ Al(OH)3 ! ____ Al2O3 + ____ H2O c. ____ BaCO3 + ____ C + ____ H2O ! ____CO + ____ Ba(OH)2 2. Write the balanced chemical equations for each of the following and label the type of reaction. Calcium Bromide + Sodium Carbonate ! Calcium Carbonate + Sodium Bromide Zinc + Silver Nitrate ! Zinc Nitrate + Silver Aluminum + Hydrochloric Acid ! Hydrogen + Aluminum Chloride When predicting products for a chemical reaction, what tables do you use to help you make a determination if the reaction will work or not? Which tables are used for which type of reaction? 4. Label the type of reaction and if the reaction is possible write the completed , correctly balanced equations for each of the following a. . _____ Na2CO3 + _____ Ca(OH)2 ! _____ Al + ______ Cl2 ! ______ Br2 + _____ NaCl ! Calcium + Magnesium Sulfate ! Barium Chloride + Potassium Sulfate ! f. . 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