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






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






4. The measure of disorder in a system






5. An ion that has a positive charge






6. A substituent obtained from a saturated hydrocarbon by removing one hydrogen atom -Examples: methyl(CH3) ethyl(C2H5)






7. Capable of being drawn into a thing wire






8. To take water from a substance






9. Unit of energy done by 1 dyne (1/980 g of force) acting through a distance of 1 cm; 2.4 x 10 (-11) kcal






10. Process for converting atmospheric nitrogen into compounds






11. The energy needed to break a chemical bond and form a neutral atom






12. One of the building blacks matter is composed of - only one type of atom; cannot be further decomposed






13. A cell in which electrolysis is carried out






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






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






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






17. Forms of the same element that differ in their crystalline structures






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






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






20. A metallic oxide that forms a base when placed in water






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






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






23. Bonding accomplished through the sharing of electrons so that atoms can fill their outer shells






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






25. Science concerned with the compositions of substances and the changes that they undergo






26. Organic compound formed by dehydrating oxidized alcohol; contains the characteristic - CHO group






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






28. A terminal of an electrolytic cell






29. A water wolution that contains an excess of hydroxide ions; a proton acceptor; a base turns litmus paper blue and neutralizes acids to form salts






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






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






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






33. 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






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






35. 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






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






37. Heat content of a chemical system






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






39. An ion or particle that has a negative charge and thus is attracted to a positively charged anode






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






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






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






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






44. The minimum energy necessary to start a reaction






45. Having no definite crystalline structure






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






47. 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






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






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






50. The process of first vaporizing a liquid and then condensing the vapor back into a liquid - leaving behind the nonvolatile impurities