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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. Lowest energy state of an atom.






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






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






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






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






6. A vertical column of the periodic table






7. The general term for any isotope of any element






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






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






10. Atoms of the same element that have different masses






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






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






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






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






15. A reaction in which one or more substances are converted into different substances






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






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






18. A measure of the amount of matter






19. A vertical column of the periodic table






20. Two quantities that give a constant value when one is divided by the other






21. 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.






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






23. 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






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






25. The 14 elements with the atomic numbers 90-103.






26. Anything that has mass and takes up space






27. The measurement system accepted worldwide

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28. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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29. 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






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






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






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






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






34. Narrow beam of the emitted light was shined through a prism - it was separated into four specific colors of the visible spectrum.






35. Having a uniform composition throughout






36. Not having a uniform composition throughout






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






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






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






40. A blend of two or more kinds of matter - each of which retains its own identity and properties






41. 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






42. Something that has magnitude - size - or amount






43. Distance between corresponding points on adjacent waves.






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






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






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






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






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






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






50. A measure of the gravitational pull on matter