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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. The layer of gasses surrounding the earth - A unit of pressure (1 atm = 760mm of Hg or torr)






2. A substance composed of elements chemically united in definite proportions by weight






3. 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






4. 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






5. A compound whose basic structure contains the benzene ring; it usually has an odor






6. A substance used to remove the excess chlorine in the bleaching process






7. The breaking down of a compound into two or more simpler substances






8. Separation of the ions of an ionic compound due to the action of a solvent






9. The use of radioactive carbon-14 to estimate the ages of ancient materials - such as archaeological or paleontological specimens






10. An ion that has a positive charge






11. A reaction in which two chemical substances exchange ions with the formation of two new compounds






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






13. A cell in which electrolysis is carried out






14. A device used to accelerate charged particles to high energies for bombarding the nuclei of atoms






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






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






17. A chemical action in which both heat and light are given off






18. Shorthand method of showing the changes that take place in a chemical reaction






19. E=mc2 - relates mass to energy






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






21. The rapid escape of excess gas that has been dissolved into a liquid






22. A substance composed of two or more metals - which are intimately mixed; usually made by melting the metals together






23. 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






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






25. Having definite molecular or ionic structure






26. Chemical reaction that results in an absorption of heat






27. A bond between atoms involving two electron pairs - unsaturated






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






29. Organic compound containing the -O- group






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






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






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






34. Process of heating an organic substance - such as coal - in the absence of air to break it down into solid and volatile products






35. Suspension of fine particles or droplets of one liquid in another - the two liquids being immiscible in each other; surrounded by an emulsifying agent






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






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






38. The electrode in an electrolytic cell that is negatively charged and attracts positive ions






39. Having no definite crystalline structure






40. Nuclear reaction that releases energy because of the splitting of large nuclei into smaller ones






41. The process by which suspended matter is removed from a liquid by passing the liquid through a porous material






42. Substance that - when added to a solution - makes changing the pH of the solution more difficule






43. Referring to a hydroxide that may have either acidic or basic properties - depending on the substance with which it reacts






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






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






46. Capable of being drawn into a thing wire






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






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






49. The minimum energy necessary to start a reaction






50. The process of separation of a solution by diffusion through a semipermeable membrance