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Pre - AP Chemistry

Subjects : pre-ap, science
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. States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.






2. A broad generalization that explains a body of facts or phenomena






3. Anything that has mass and takes up space






4. The energy change that occurs when an electron is acquired by a neutral atom.






5. An explanation of how phenomena occur and how data or events are related






6. Distance between corresponding points on adjacent waves.






7. A value calculated by subtracting the experimental value from the accepted value - dividing the difference by the accepted value - and then multiplying by 100






8. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation






9. Any substance that has a definite composition






10. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.

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11. Any digit in a measurement that is known with certainty plus one final digit - which is somewhat uncertain or is estimated






12. Describes mathematically the wave properties of electrons and other very small particles.






13. State in which an atom has a higher potential energy than it has in it's ground state.






14. The elements of group 1 of the periodic table.






15. The p-block elements together with the s-block elements.






16. The measurement system accepted worldwide

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17. No two electrons in the same atom can have the same set of four quantum numbers






18. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data






19. Minimum quantity of energy that can be lost or gained by an atom.






20. A property that does not depend on the amount of matter present






21. Which suborbital. (Py - Px - Pz)






22. The closeness of a set of measurements of the same quantity made in the same way






23. Any process that results in the formation of an ion.






24. An element that is a good conductor of heat and electricity






25. A positive ion.






26. The ratio of mass to volume or mass divided by volume






27. If two or more different compounds arecomposed of the same two elements - then the ratio of the masses of the secondelement combined with a certain mass of the first element is always a ratio ofsmall whole numbers






28. The d-block elements are metals with typical metallic properties.






29. The study of the composition - structure - and properties of matter and the changes it undergoes






30. A form of energy that exhibits wavelike behavior as it travels through space (3.00x108 m/s)






31. Which way it spins. (up or down)






32. Mass is neither created nor destroyed duringordinary chemical or physical reactions






33. The state of matter in which a substance has neither definite volume nor definite shape






34. The smallest unit of an element that maintains the properties of that element






35. The state of matter in which the substance has a definite volume but an indefinite shape






36. The number of protons in the nucleus of each atom of an element






37. The energy required to remove one electron from a neutral atom of an element.






38. The elements of group 2 of the periodic table.






39. The 14 elements with the atomic numbers 58-71.






40. Not having a uniform composition throughout






41. A short-range proton-neutron - proton-proton - or neutrorce that holds the nuclear particles together






42. The smallest unit of an element that maintains the properties of that element






43. Two quantities that have a constant mathematical product






44. The closeness of measurements to the correct or accepted value of the quantity measured






45. A change in which one or more substances are converted into different substances






46. A chemical compound contains the same elementsin exactly the same proportions by mass regardless of the size of the sample orthe source of the compound






47. A 3D region around the nucleus that indicates the probable location of an electron.






48. A unit that is a combination of SI base units






49. The total amount of energy level an atom has.






50. An arrangement of the elements in order of their atomic numbers so that the elements with similar properties fall in the same column or group.







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