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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 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






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






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






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






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






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






8. In metallurgy: a substance that helps to melt and remove the solid impurities as slag






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






10. A substance composed of two or more metals - which are intimately mixed; usually made by melting the metals together






11. Having no definite crystalline structure






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






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






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






15. Organic compound containing the -O- group






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






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






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






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






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






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






22. 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






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






24. The minimum energy necessary to start a reaction






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






26. E=mc2 - relates mass to energy






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






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






29. A liquid that will conduct and electric current






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






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






32. Capacity to do work






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






34. The measure of disorder in a system






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






36. 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






37. 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






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






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






40. 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






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






42. An ion that has a positive charge






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






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






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






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






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






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






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






50. Graduated glass tube into which gases are placed and subjected to an electric spark; measures the individual volumes of combining gases