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SAT Subject Test: Chemistry Vocab

Subjects : sat, science, 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. A reaction in which two chemical substances exchange ions with the formation of two new compounds






2. Loss by a substance of its water of hydration on exposure to air at ordinary temperatures






3. A reaction produced during nuclear fission when at least one neutron from each fission produces another fission - so that the process becomes self sustaining without additional external energy






4. A change by which an element takes the place of another element in a compound






5. A terminal of an electrolytic cell






6. An instrument - invented by Toricelli in 1643 - used for measuring atmospheric pressure






7. Ethyl alcohol that has been poisoned in order to produce a cheaper alcohol for industrial purposes






8. Breaking down of a compound into simpler substances or constituent elements






9. Referring to a compound composed of two elements such as water






10. The process of forming definitely shaped crystals when water is evaporated from a solution of the substance






11. The point in a reversible reaction at which the forward reaction is occurring at the same rate as the opposing reaction






12. Streams of electrons given off by the cathode of a vacuum tube






13. A property of a solution that depends primarily on the concentration - not the type of particles present






14. Temperature measured on the absolute scale - which has its origin at absolute zero






15. Chemical reaction that results in the giving off of heat






16. The number of molecules in 1 gram-molecular volume of a substance - or the number of atoms in 1 gram-atomic mass of an element 6.02 x 10(-27)

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17. The difference in potential between an electrode and the solution in which it is immpesed






18. The smallest amount of fissionable material that will sustain a chain reaction






19. Determines how a substance will behave in a chemical reaction






20. A unit of heat; the amount of heat needed to raise the temperature of 1 gram of water 1 degree on the celcius scale






21. A substance that speeds up or slows down a reaction without being permanently changed itself






22. The flow of a gas through a small aperture






23. A salt formed by replacing part of the hydrogen ions of a dibasic or tribasic acid with metallic ions - Examples: NaHSO4 - NaH2PO4






24. A water solution that has an excess of hydrogen ions; an acid turns litmus paper pink or red - has a sour taste - and neutralizes bases to form salts






25. The numerical expression of the relative strength with which the atoms of an element attract valence electrons to themselves; the higher the number - the greater the attraction






26. The average mass of a number; bottom number on the element






27. Absorbtion by a substance of water from the air - so that the substance becomes wet






28. Negatively charged particle - Mass is 9.109x10(-28)






29. A compound such as CH3NH2 - derived from ammonia by substituting one or more hydro-carbon radicals for hydrogen atoms






30. Positively charged helium nuclei






31. An organic salt formed by the reaction of an alcohol with an acid






32. Unit for expressing the kinetic energy of subatomic particles; the energy acquired by an electron when it is accelerated by a potential difference of 1 volt






33. A chance that alters the atomic structures of the substances involved and results in different properties






34. Residual radioactivity from an atmospheric nuclear test - eventually settles on the surface of the earth






35. An instrument used to measure the amount of heat liberated or absorbed during a change






36. Rod of certain metal such as cadmium - which controls the speed of the chain reaction by absorbing neutrons in a nuclear reactor






37. The adhesion (in an extremely thing layer) of the molecules of gases - of dissolved substances - or of liquieds to the surfaces of solid or liquid bodies with which they come into contact






38. Usually - a strong base - such as Sodium hydroxide - potassium hydroxide






39. A nonmetallic oxide that - when placed in water - reacts to form an an acid solution






40. The process whereby gases or liquids intermingle freely of their own accord






41. Graduated glass tube into which gases are placed and subjected to an electric spark; measures the individual volumes of combining gases






42. Shows only the simplest ratio of the number and kids of atoms






43. An organic hydroxyl compound formed by relacing one or more hydrogen atoms of a hydrocarbon with equal number of hydroxyl (OH) groups






44. Continuous zigzagging movement of colloidal particles in a dispersing medium - as viewed through and ultramicroscope






45. An ion that has a positive charge






46. The minimum energy necessary to start a reaction






47. The temperature above which no gas can be liquefied - regardless of the pressure applied






48. A relatively weak force of attraction between polar molecules; a component of van der Waals forces






49. Having no definite crystalline structure






50. One of the "building blocks" of proteins; contains one or more NH2- groups that have replaced the same number of hydrogen atoms in an organic acid







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