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Pre - AP Chemistry

Subjects : pre-ap, science
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. An arrangement of the elements in order of their atomic numbers so that the elements with similar properties fall in the same column or group.






2. The arrangement of electrons in an atom






3. The ratio of mass to volume or mass divided by volume






4. The total amount of energy level an atom has.






5. Lowest energy state of an atom.






6. The measurement system accepted worldwide


7. A 3D region around the nucleus that indicates the probable location of an electron.






8. The state of matter in which the substance has a definite volume but an indefinite shape






9. Something that has magnitude - size - or amount






10. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.






11. An outer main energy level occupied - in most cases - by 8 electrons






12. The total number of protons and neutrons in the nucleus of an isotope






13. A blend of two or more kinds of matter - each of which retains its own identity and properties






14. Which way it spins. (up or down)






15. A change in a substance that does not involve a change in the identity of the substance






16. A unit that is a combination of SI base units






17. The state of matter in which a substance has neither definite volume nor definite shape






18. The weighted average of the atomic masses of thenaturally occurring isotopes of an element






19. An explanation of how phenomena occur and how data or events are related






20. A vertical column of the periodic table






21. The Group 18 elements (helium - neon - argon - krypton - xenon - and radon)






22. Which suborbital. (Py - Px - Pz)






23. Mass is neither created nor destroyed duringordinary chemical or physical reactions






24. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance


25. An atom or group of bonded atoms that has a positive or negative charge.






26. A property that does not depend on the amount of matter present






27. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation






28. If two or more different compounds arecomposed of the same two elements - then the ratio of the masses of the secondelement combined with a certain mass of the first element is always a ratio ofsmall whole numbers






29. A vertical column of the periodic table






30. Any substance that has a definite composition






31. An element that has some characteristics of metals and some characteristics of nonmetals






32. The electrons available to be lost - gained - or shared in the formation of chemical compounds.






33. A negative ion.






34. The closeness of measurements to the correct or accepted value of the quantity measured






35. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.


36. A reaction in which one or more substances are converted into different substances






37. The p-block elements together with the s-block elements.






38. A property that depends on the amount of matter that is present






39. A chemical compound contains the same elementsin exactly the same proportions by mass regardless of the size of the sample orthe source of the compound






40. A positive ion.






41. A value calculated by subtracting the experimental value from the accepted value - dividing the difference by the accepted value - and then multiplying by 100






42. A substance that has a fixed composition and differs from a mixture in that every sample of a given pure substance has exactly the same characteristic properties and composition






43. An element that is a good conductor of heat and electricity






44. Minimum quantity of energy that can be lost or gained by an atom.






45. The d-block elements are metals with typical metallic properties.






46. The general term for any isotope of any element






47. The closeness of a set of measurements of the same quantity made in the same way






48. The amount of space occupied by an object






49. Describes mathematically the wave properties of electrons and other very small particles.






50. Not having a uniform composition throughout