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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. States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.






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






3. Combination of all the forms of electromagnetic radiation.






4. One wave per second.






5. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number






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






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






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






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






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






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






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






13. The number of protons in the nucleus of each atom of an element






14. The physical and chemical properties of the elements are periodic functions of their atomic numbers.






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






16. A measure of the amount of matter






17. Anything that has mass and takes up space






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






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






20. Lowest energy state of an atom.






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






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






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






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

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25. Not having a uniform composition throughout






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






27. A substance that reacts in a chemical change






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






29. The amount of space occupied by an object






30. The measurement system accepted worldwide

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31. Any substance that has a definite composition






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






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






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






35. A testable statement






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






37. 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






38. Having a uniform composition throughout






39. Two quantities that have a constant mathematical product






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






41. A vertical column of the periodic table






42. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg






43. 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






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






45. A form of energy that exhibits wavelike behavior as it travels through space (3.00x108 m/s)






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






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






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






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






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