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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 substance composed of elements chemically united in definite proportions by weight






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






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






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






5. Positively charged helium nuclei






6. The flow of a gas through a small aperture






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






8. The smallest particle of an element that retains the properties of that element and can enter into a chemical reaction






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






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






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






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






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






14. Organic compound containing the -O- group






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






16. 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






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






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






19. E=mc2 - relates mass to energy






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






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






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






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






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






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






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






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






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






29. To take water from a substance






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






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






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






33. High=speed - negatively charged electrons emitted in radiations






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






35. Referring to any substance that has basic properties






36. Capable of being drawn into a thing wire






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






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






39. 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






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






41. Nuclear reactor in which more fissionable material is produced than is used up during operation






42. Substance that takes water from another substance






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






44. Having no definite crystalline structure






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






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






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






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






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






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