## Test your basic knowledge |

# AP Chemistry

**Instructions:**

- Answer 50 questions in 15 minutes.
- If you are not ready to take this test, you can study here.
- Match each statement with the correct term.
- Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

**1. Carbon - hydrogen - oxygen compounds**

**2. (msubs) Can only be +1/2 or -1/2**

**3. Kinetic Energy per molecule**

**4. (organics) four carbons**

**5. The mixing of native atomic orbitals to form special orbitals for bonding**

**6. How to Find an Empirical Formula Given Percentages**

**7. Ketone suffix**

**8. Variable for spin of electron (+.5 or -.5)**

**9. H?+NH3?NH4**

**10. Chemical composition of dry ice**

**11. Negative enthalpy - heat flows into surroundings**

**12. The likelihood that a rxn will occur "by itself"**

**13. (organics) triple-bonded compound**

**14. Energy required to break a bond**

**15. Mol of solute/kg of solvent**

**16. Volume of gas @STP**

**17. Releases/gives off heat (negative value)**

**18. H + donor**

**19. When _____ significant digits - round answer to least significant digit**

**20. Consists of a complex ion - a transition metal with attached ligands - and counterions**

**21. Compound in which there is a bond between two non-metals; when naming them you use the numerical prefixes (may NOT be reduced i.e. S2F4 may not become SF2)**

**22. AX5**

**23. C2H3O2?**

**24. Resistance to flow**

**25. Change that occurs at constant temperature**

**26. S?**

**27. 760mmHg/Torr**

**28. AX2 - AX2E3**

**29. Boiling point elevation formula**

**30. Ecell= Ecell -RT/nF x lnQ**

**31. Half-life equation**

**32. A method of investigation involving observation and theory to test scientific hypotheses**

**33. Mass percent**

**34. 1 sigma bond**

**35. How to Balance a Redox Equation**

**36. Elements on staircase on periodic table**

**37. [A]0/2k**

**38. Kinetic Energy of an individual particle formula**

**39. Significant Digits of Conversion Factors**

**40. Where there are no electrons**

**41. A homogeneous mixture with 1 phase**

**42. Similar to atomic orbitals - except between molecules**

**43. ClO3?**

**44. C=2.9979*10^8 m/s**

**45. Ionizes to produce H+ ions**

**46. Aldehyde suffix**

**47. Atomic #**

**48. Ka=[products]^m/[reactants]^n**

**49. Different form of same element**

**50. Metal oxide + H20 ->**