Chemistry Final ACS Exam with all Answers, Exams of Advanced Education

Download Chemistry Final ACS Exam with all Answers and more Exams Advanced Education in PDF only on Docsity! Chemistry Final ACS Exam with all Answers Accuracy? - correct answer-Closeness of measurements to the TRUE VALUE of what is being measured Precision? - correct answer-Closeness of a SET of measurements How do you calculate Percent Error? - correct answer-I experimental-accepted I ____________________ x 100 accepted value Are zeros infront of non-zero digis significant? - correct answer-Nope! ex: 0.0071 is only 2 sig figs Are zeros at the end of a number and to the right of the decimal significant? - correct answer-Yep! ex: 9.100 is 4 sig figs Addition/Subtraction in regards to sig figs? - correct answer-Round numbers to the least number of decimal places Multiplaction/Division in regards to sig figs? - correct answer-Round answers to the least amount of sig figs # of e- equal - correct answer-the # of p+ Atomic Mass? - correct answer-Number of protons in the nucleus (number on the left bottom corner of the chemical symbol) Atomic Mass Number? - correct answer-Number of protons and neutrons (number on the left upper corner of the chemical symbol) Isotope? - correct answer-Atoms of the same element, but with different masses (different number of neutrons) STUDY ELECTRON CONFIGURATIONS - correct answer-STUDY ELECTRON CONFIGURATIONS Do columns or rows in the Periodic Table have similar patterns? - correct answer- Columns (the "groups") have repeating patterns? Which area of the Periodic Table has greater metallicness? - correct answer-Left and down has greater metallicness Which area of the PT has greater atomic size? - correct answer-Left and down has a greater atomic size Which area of the PT has greater ionization energy? - correct answer-Right side and up has greater ionization energy Which area of the PT has greater electronegativity? - correct answer-Right side and up has greater electronegativiy, except the Noble Gases of 0 electronegativy Ionic Bonding? - correct answer-Metal and a nonmetal. Give/take electrons Covalent bonding? - correct answer-Nonmetal and a nonmetal. Share electrons. VSEPR Theory? - correct answer-Valence Shell Electron Pair Repulsion aka Valence e- pairs stay as far apart as possible How do you determine polarity? - correct answer-Use the chart that has electronegativity values, then subtract the elements in the compound from each other. Is water polar? - correct answer-Yes! Combination Reaction? - correct answer-A + B --> AB Decomposition Reaction? - correct answer-AB --> A + B Single Replacement Reaction? - correct answer-AB + C --> AC + B Double Replacement Reaction? - correct answer-AB + CD --> AD + CB Combustion Reaction? - correct answer-C + H + O --> H2O + CO2 always Avogadro's Number? - correct answer-6.022 x 10^23 particles = 1 mole Molar Mass? - correct answer-gram/mole Mole to Volume? - correct answer-1 mole = 22.4 L Empirical Formula vs Molecular Formula? - correct answer-Molecular = the actual number of atoms in a compound Empirical = basic ratio, smallest whole numbers of atoms in a compound Percent Composition? - correct answer-Mass element/mass compound x 100