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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. A characteristic that can be observed or measured without changing the identity of the substance






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






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






4. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






8. 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.






9. A testable statement






10. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






12. Having a uniform composition throughout






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






14. An electron occupies the lowest-energy orbital that can receive it






15. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number






16. Not having a uniform composition throughout






17. Distance between corresponding points on adjacent waves.






18. 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






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






20. The physical and chemical properties of the elements are periodic functions of their atomic numbers.






21. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg






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






23. The elements of group 17 of the periodic table.






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






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






26. States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.






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






28. Specify the properties of atomic orbitals and the properties of electrons in orbitals.






29. The electrons available to be lost - gained - or shared in the formation of chemical compounds.






30. The measurement system accepted worldwide

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31. Emission of electrons from a metal when light shines on a metal.






32. Anything that has mass and takes up space






33. 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






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






35. Something that has magnitude - size - or amount






36. An outer main energy level occupied - in most cases - by 8 electrons






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






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






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






41. A substance that is formed by a chemical change






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






43. The amount of space occupied by an object






44. A negative ion.






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






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






47. An element that has some characteristics of metals and some characteristics of nonmetals






48. The amount of a substance that contains as many particles as there areatoms in exactly 12 g of carbon-12






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






50. The arrangement of electrons in an atom