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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. High=speed - negatively charged electrons emitted in radiations






2. 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






3. Organic compound containing the -O- group






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






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






6. 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






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






8. 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






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






10. Covalence in which both electrons in a pair come from the same atom






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






12. E=mc2 - relates mass to energy






13. The highest temperature at which water vapor condenses out of the air






14. Chemical reaction between an alcohol and an acid - in which an ester is formed






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






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






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






18. Containing no water






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






20. 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






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






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






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






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






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






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






28. Substance that takes water from another substance






29. Temperature scale that has 32 as freezing point and 212 as boiling point






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






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






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






33. Heat content of a chemical system






34. 1/2 the distance between adjacent nuclei in the crystalline or solid phase of an element; distance from the atomic nucleus to the valence electrons






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






36. A cell in which electrolysis is carried out






37. A liquid that will conduct and electric current






38. Process for converting atmospheric nitrogen into compounds






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






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






41. The series of radioactive elements starting with actinium - No. 89 - and ending with lawrencium - No. 103






42. 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






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






44. Depositing a thin layer of metallic element on the surface of another metal by electrolysis






45. Top number on periodic table - The number of protons in the nucleus - The number of electrons in an atom






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






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






48. Positively charged helium nuclei






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






50. Having no definite crystalline structure