(02.07 MC) Which of the following correctly compares the radii of Cl and Cl−?

(02.06 LC) A substance is a good conductor of electricity. Which of the following best explains the probable position of the substance in the periodic table?

(02.03 MC) An electron moved from a higher energy level to a lower energy level. What most likely happened during the transition?

(02.01 MC) Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom?

(02.08 LC) Which of the following is true for a reliable scientific source?

(02.01 LC) Which of the following is a characteristic of durable scientific knowledge?

(02.01 LC) Which of the following provides evidence to support Rutherford’s model of the atomic nucleus?

(04.01 LC) The reactant side of a balanced chemical equation is shown below.Al2(SO4)3 + 3Cl2 →How many chlorine atoms are there on the product side in the equation?

(04.05 MC) Read the following chemical equations.Reaction 1: CH4 + 2O2 → 2H2O + CO2Reaction 2: 2CuO + C → 2Cu + CO2Which of the following statements is true for both the chemical equations?

(04.07 HC) Studying the decay of radioactive isotopes in dead organisms helps scientists to identify fossilized remains. The ratio of C-12 to C-14 in the atmosphere is 1 x 1012. The table shows this ratio inside the body of three organisms. C12/C14 Ratio Organism C12/C14 Ratio A 1 x 1012 B 2 x 1012 C 4 x 1012 What can most likely be concluded from the above information?