1. All the following may change during a chemical reaction except:
2. In the reaction C₃H₈O₃ + 2O₂ → 3CO₂ + 4H₂O, the coefficient of C₃H₈O₃ when the equation is balanced is:
3. Predict the effect of increased pressure on the reaction C(s) + S₂(g) ↔ CS₂(g):
4. What volume will 2.0 moles of an ideal gas occupy at STP?
5. In which of the following molecules does the Sulfur atom have an expanded octet? I. SO₂ II. SF₄ III. SO₂Cl₂ IV. SF₆
6. When arranged in order of increasing atomic number, the elements exhibit periodicity for all the following properties except:
7. Which of the following statements about chemical equilibrium is true?
8. The major discrepancy of the Rutherford atomic model corrected by Bohr’s model is that:
9. The enthalpy change for a reaction is positive. What does this indicate about the reaction?
10. Which factor does not affect the rate of a chemical reaction?
11. Which of the following elements has the highest electronegativity?
12. Which gas law states that the volume of a gas is directly proportional to its temperature at constant pressure?
13. What is the mole fraction of glucose in a solution containing 5.68g of glucose (C₆H₁₂O₆) dissolved in 25.2g of water?
14. When counting the electron domains around the central atom using VSEPR theory, which of the following is not considered?
15. Which of the following elements would best not be classified as a metalloid?
