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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. Determines how a substance will behave in a chemical reaction






2. Having definite molecular or ionic structure






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






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






5. One of the building blacks matter is composed of - only one type of atom; cannot be further decomposed






6. Process for converting atmospheric nitrogen into compounds






7. Heat content of a chemical system






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






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






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






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






13. To take water from a substance






14. 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






15. A liquid that will conduct and electric current






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






17. 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






18. 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






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






20. An ion that has a positive charge






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






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






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






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






25. Referring to any substance that has basic properties






26. 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)






27. The measure of disorder in a system






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






29. Positively charged helium nuclei






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






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






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






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






34. Organic compound containing the -O- group






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






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






37. E=mc2 - relates mass to energy






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






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






40. The minimum energy necessary to start a reaction






41. The process of taking up by capillary - osmotic - chemical - or solvent action - as a sponge absorbs water






42. 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






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






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






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






46. Substance that takes water from another substance






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






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






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






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







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