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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 number of protons in the nucleus of each atom of an element






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






3. 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






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






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






6. Atoms of the same element that have different masses






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






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






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






10. The general term for any isotope of any element






11. A horizontal row of elements in the periodic table






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






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






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






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






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






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






18. 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






19. Distance between corresponding points on adjacent waves.






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






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






22. Two quantities that have a constant mathematical product






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






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






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






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






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






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






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






30. Lowest energy state of an atom.






31. Combination of all the forms of electromagnetic radiation.






32. Specify the properties of atomic orbitals and the properties of electrons in orbitals.






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






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






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






36. A physical change of a substance from one state to another






37. A positive ion.






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






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






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






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






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






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






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






45. A measure of the amount of matter






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






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






48. A negative ion.






49. A substance that is formed by a chemical change






50. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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