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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 minimum energy necessary to start a reaction






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






3. 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






4. 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






5. 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






6. A liquid that will conduct and electric current






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






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






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






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






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






13. A. change from gas to liquid B. the combination of molecules without water






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






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






16. A temperature scale divided into 100 equal divisions and based on water freezing at 0 degress and boiling at 100 degrees






17. Colloidal substance that forms a film about the particles of two immiscible liquids so that one remains suspended in the other






18. The mass per unit volume of a substance; mathematical formula D=m/V






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






20. Particles larger than those found in a solution but smaller than those in a suspension






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






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






23. Chemical reaction that results in an absorption of heat






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






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






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






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






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






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






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






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






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






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






34. 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






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






36. The temperature at which the vapor pressure of a liquid equals the atmospheric pressure






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






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






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






40. Substance that takes water from another substance






41. To take water from a substance






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






43. The union of atoms to form compounds or molecules by filling their outer shells of electonrs. This can be done through giving and taking electrons (ionic) or by sharing electrons






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






45. 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






46. A terminal of an electrolytic cell






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






48. Having definite molecular or ionic structure






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






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