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






2. A high-temperature physical state of matter in which atoms lose their electrons






3. The measurement system accepted worldwide

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






5. 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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6. The elements of group 1 of the periodic table.






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






8. Atoms of the same element that have different masses






9. A pure substance made of only one kind of atom






10. The amount of space occupied by an object






11. The arrangement of electrons in an atom






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






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






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






15. A vertical column of the periodic table






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






17. A ratio derived from the equality between two different units that can be used to convert from one unit to the other






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






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






20. A substance that has a fixed composition and differs from a mixture in that every sample of a given pure substance has exactly the same characteristic properties and composition






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






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






23. The ability of a substance to undergo a change that transforms it into a different substance






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






25. A positive ion.






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






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






28. An atom or group of bonded atoms that has a positive or negative charge.






29. The weighted average of the atomic masses of thenaturally occurring isotopes of an element






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






31. The Group 18 elements (helium - neon - argon - krypton - xenon - and radon)






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






33. A horizontal row of elements in the periodic table






34. A property that depends on the amount of matter that is present






35. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.






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






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






38. A negative ion.






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






40. Any substance that has a definite composition






41. A measure of the amount of matter






42. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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43. A physical change of a substance from one state to another






44. A substance that is made from the atoms of two or more elements that are chemically bonded






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






46. The general term for any isotope of any element






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






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






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






50. Having a uniform composition throughout