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






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






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






4. 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.






5. Anything that has mass and takes up space






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






7. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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8. Not having a uniform composition throughout






9. The 14 elements with the atomic numbers 90-103.






10. Lowest energy state of an atom.






11. A vertical column of the periodic table






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






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






14. Having a uniform composition throughout






15. A ratio derived from the equality between two different units that can be used to convert from one unit to the other






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






17. A measure of the amount of matter






18. Emission of electrons from a metal when light shines on a metal.






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






20. A measure of the gravitational pull on matter






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






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






23. The elements of group 17 of the periodic table.






24. Any digit in a measurement that is known with certainty plus one final digit - which is somewhat uncertain or is estimated






25. The smallest unit of an element that maintains the properties of that element






26. No two electrons in the same atom can have the same set of four quantum numbers






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






28. The state of matter in which the substance has definite volume and definite shape






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






30. Combination of all the forms of electromagnetic radiation.






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






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






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






34. Distance between corresponding points on adjacent waves.






35. A short-range proton-neutron - proton-proton - or neutrorce that holds the nuclear particles together






36. Something that has magnitude - size - or amount






37. 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






38. An element that is a poor conductor of heat and electricity






39. An electron occupies the lowest-energy orbital that can receive it






40. A negative ion.






41. A high-temperature physical state of matter in which atoms lose their electrons






42. 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






43. The energy required to remove one electron from a neutral atom of an element.






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






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






46. The amount of space occupied by an object






47. The ability of a substance to undergo a change that transforms it into a different substance






48. A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound.






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






50. A change in which one or more substances are converted into different substances