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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 average mass of a number; bottom number on the element






2. 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






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






4. 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






5. Solid carbon dioxide






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






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






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






9. Isotope of hydrogen - sometimes called heavy hydrogen - with an atomic weight of 2






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






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






12. A specially treated and finely divided form of carbon - which possesses a high degree of absorbtion






13. The process of forming definitely shaped crystals when water is evaporated from a solution of the substance






14. A terminal of an electrolytic cell






15. Referring to a compound composed of two elements such as water






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






17. Having no definite crystalline structure






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






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






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






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






22. E=mc2 - relates mass to energy






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






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






25. Capacity to do work






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






27. 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






28. The process of separating the ions in a compound by means of electrically charged poles






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






30. 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






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






32. Heat content of a chemical system






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






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






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






37. The flow of a gas through a small aperture






38. 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






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






40. 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






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






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






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






44. 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






45. Containing no water






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






47. Organic compound containing the -O- group






48. A compound derived from another compound by the removal of water; it will combine with water to form an acid (acidic anhydride) or base (basic anhydride)






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






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