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






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






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






4. A positive ion.






5. Distance between corresponding points on adjacent waves.






6. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






8. 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






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






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






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






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






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






14. 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






15. Not having a uniform composition throughout






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






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






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






19. A vertical column of the periodic table






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






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






22. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






38. A negative ion.






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






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






41. A substance that reacts in a chemical change






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






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






44. Something that has magnitude - size - or amount






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






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






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






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






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






50. A horizontal row of elements in the periodic table