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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. The emission of a continuous range of frequencies of electromagnetic radiation.






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






3. 1/2 the distance between the nuclei of identical atoms that are bonded together.






4. The measurement system accepted worldwide

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5. 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






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






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






8. The amount of a substance that contains as many particles as there areatoms in exactly 12 g of carbon-12






9. Two quantities that have a constant mathematical product






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






11. The mass of one mole of a pure substance






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






13. A vertical column of the periodic table






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






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






16. One wave per second.






17. Anything that has mass and takes up space






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






19. A testable statement






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






21. State in which an atom has a higher potential energy than it has in it's ground state.






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






23. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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24. The 14 elements with the atomic numbers 58-71.






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






26. The elements of group 2 of the periodic table.






27. 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






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






29. Having a uniform composition throughout






30. A substance that is formed by a chemical change






31. Distance between corresponding points on adjacent waves.






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






33. Not having a uniform composition throughout






34. Narrow beam of the emitted light was shined through a prism - it was separated into four specific colors of the visible spectrum.






35. Two quantities that give a constant value when one is divided by the other






36. A pure substance made of only one kind of atom






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






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






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






40. The energy change that occurs when an electron is acquired by a neutral atom.






41. Combination of all the forms of electromagnetic radiation.






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






43. A negative ion.






44. Number of waves that pass a given point in a specific time - usually one second.






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






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






47. 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






48. The amount of space occupied by an object






49. Any process that results in the formation of an ion.






50. A substance that is made from the atoms of two or more elements that are chemically bonded






Can you answer 50 questions in 15 minutes?



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