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






2. 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






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






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






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






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






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






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






9. One wave per second.






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






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






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






13. Something that has magnitude - size - or amount






14. The amount of space occupied by an object






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






16. 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.






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






18. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






20. A vertical column of the periodic table






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






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






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






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






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






26. The arrangement of electrons in an atom






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






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






29. A positive ion.






30. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






33. A measure of the amount of matter






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






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






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






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






38. Atoms of the same element that have different masses






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






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






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






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






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






44. 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






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






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






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






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






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






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