AP Chem Quiz

Example Questions From the Test

• 1What is the ground-state electron configuration of a sodium ion, Na+?
  • 1s^2 2s^2 2p^6 3s^1, totaling eleven electrons
  • 1s^2 2s^2 2p^5, totaling nine electrons
  • 1s^2 2s^2 2p^6, totaling ten electrons
  • 1s^2 2s^2 2p^6 3s^2, totaling twelve electrons
• 2An ideal gas is sealed in a rigid container. Its temperature increases from 300 K to 600 K. What happens to its pressure?
  • It decreases to one-half its original value.
  • It increases to twice its original value.
  • It increases to four times its original value.
  • It remains unchanged because the volume is fixed.
• 4Methane burns according to CH4 + 2 O2 → CO2 + 2 H2O. If methane is in excess, how many moles of CO2 can form from 3.2 mol of O2?
  • 2 mol
  • 6 mol
  • 4 mol
  • 80 mol