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






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






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






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






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






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






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






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






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






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






11. Something that has magnitude - size - or amount






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






13. The mass of one mole of a pure substance






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






15. The measurement system accepted worldwide

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






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






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






19. A measure of the amount of matter






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






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






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






23. 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






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






25. Two quantities that have a constant mathematical product






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






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






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






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






30. A negative ion.






31. Anything that has mass and takes up space






32. A substance that reacts in a chemical change






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






34. Any digit in a measurement that is known with certainty plus one final digit - which is somewhat uncertain or is estimated






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






36. A vertical column of the periodic table






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






38. 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






39. Emission of electrons from a metal when light shines on a metal.






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






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






42. The amount of space occupied by an object






43. A vertical column of the periodic table






44. Distance between corresponding points on adjacent waves.






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






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






47. Having a uniform composition throughout






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






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






50. A substance that is formed by a chemical change