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






3. Lowest energy state of an atom.






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






5. Atoms of the same element that have different masses






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






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






8. A substance that reacts in a chemical change






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






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






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






12. The measurement system accepted worldwide

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






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






15. 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






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






17. A measure of the amount of matter






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






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






20. An element that is a poor conductor of heat and electricity






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






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






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






24. An atom or group of bonded atoms that has a positive or negative charge.






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






26. A short-range proton-neutron - proton-proton - or neutrorce that holds the nuclear particles together






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






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






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






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






31. Combination of all the forms of electromagnetic radiation.






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






33. Distance between corresponding points on adjacent waves.






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






35. 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






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






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






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






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






40. One wave per second.






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






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






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






44. A change in a substance that does not involve a change in the identity of the substance






45. The mass of one mole of a pure substance






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






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






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






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






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