AP MCQ 00ABC PART 1 Question 01: Which term describes the proximity of a measurement to the actual value? Accuracy Precision Certainty Uncertainty Question 02: In Rutherford's Gold Foil Experiment it was found that most of the positively charged alpha particles passed through the gold foil without deflection, but that a few of the alpha particles were deflected by large amounts. What conclusion did Rutherford draw from these observations? That the atom is made up mostly of empty space That a small, negatively charged nucleus exists That the electron must have a negative charge That positively charged nuclei are present in most parts of an atom Question 03: Which of the following calculations would give a correct value for the number of neutrons in a single atom of Ne22? 10 - 22 10 + 22 22 -10 More data about the isotopes of Ne are required Question 04: How many significant figures does the number 2900 possess? 1 2 3 4 Question 05: Which of the following base quantities is paired with the WRONG unit? Amount of substance in g Mass in kg Length in m Temperature in K Question 06: Which of the following describes a chemical change? Forces within substances are disrupted and new substances are fomed Forces between substances are disrupted and no new substances are formed Forces within substances are disrupted but no new substances are formed Forces between substances are disrupted and new substances are formed Question 07: Which data are the most precise? 1.01, 1.01, 1.03 1.01, 1.02, 1.01 1.01, 1.03, 1.04 1.01, 1.01, 1.01 Question 08: The prefix 'kilo' denotes raising 10 to which of the following powers? 1 2 3 6 Question 09: Which term describes the physical change from a solid directly to a gas? Boiling Melting Condensing Subliming Question 10: What is the % error when an experiment produces a value of 25, when the true, accepted value is 75? 25% 50% 67% 75% Δ
