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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. A substance that is formed by a chemical change






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






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






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






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






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






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






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






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






10. 1/2 the distance between the nuclei of identical atoms that are bonded together.






11. A horizontal row of elements in the periodic table






12. 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






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






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






15. Two quantities that have a constant mathematical product






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






17. Having a uniform composition throughout






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






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






20. A negative ion.






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






22. The general term for any isotope of any element






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

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






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






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






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






28. 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






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






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






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






32. 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






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






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






35. Atoms of the same element that have different masses






36. A measure of the amount of matter






37. The mass of one mole of a pure substance






38. Lowest energy state of an atom.






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






40. The measurement system accepted worldwide

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






42. Distance between corresponding points on adjacent waves.






43. An arrangement of the elements in order of their atomic numbers so that the elements with similar properties fall in the same column or group.






44. Something that has magnitude - size - or amount






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






47. The arrangement of electrons in an atom






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






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






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