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






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






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






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






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






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






7. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






12. Having a uniform composition throughout






13. Two quantities that have a constant mathematical product






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






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






16. Something that has magnitude - size - or amount






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






18. The state of matter in which the substance has a definite volume but an indefinite shape






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






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 mass of one mole of a pure substance






22. The general term for any isotope of any element






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






24. 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






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






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






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






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






30. 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






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






32. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.






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






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






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






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






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






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






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






40. The amount of space occupied by an object






41. Atoms of the same element that have different masses






42. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation






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






44. Any substance that has a definite composition






45. The measurement system accepted worldwide

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46. Lowest energy state of an atom.






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






48. A substance that is formed by a chemical change






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






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