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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 measurement system accepted worldwide

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2. Atoms of the same element that have different masses






3. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.

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






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






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






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






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






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






11. Anything that has mass and takes up space






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






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






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






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






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






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






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






19. A substance that is formed by a chemical change






20. The study of the composition - structure - and properties of matter and the changes it undergoes






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






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






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






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






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






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






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






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






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






30. A vertical column of the periodic table






31. A characteristic that can be observed or measured without changing the identity of the substance






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






33. A measure of the gravitational pull on matter






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






35. The arrangement of electrons in an atom






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






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






38. 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






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






40. One wave per second.






41. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






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






47. A substance that reacts in a chemical change






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






49. The amount of space occupied by an object






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






Can you answer 50 questions in 15 minutes?



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