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






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






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






4. A positive ion.






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






6. A horizontal row of elements in the periodic table






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






8. Something that has magnitude - size - or amount






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






10. The amount of space occupied by an object






11. The suborbitals of an atom. (S - P - D - F)






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






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






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






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






16. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance


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






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






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






20. The measurement system accepted worldwide


21. Having a uniform composition throughout






22. A broad generalization that explains a body of facts or phenomena






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






24. The elements of group 1 of the periodic table.






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






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






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






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






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






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






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






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






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






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






35. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data






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






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






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






39. A measure of the amount of matter






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






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






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






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






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






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






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






47. Combination of all the forms of electromagnetic radiation.






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






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






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