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






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






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






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






5. A measure of the amount of matter






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






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






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






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






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






11. A substance that is formed by a chemical change






12. A value calculated by subtracting the experimental value from the accepted value - dividing the difference by the accepted value - and then multiplying by 100






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






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






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






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






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






18. 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






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






20. Two quantities that have a constant mathematical product






21. One wave per second.






22. The arrangement of electrons in an atom






23. 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






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






25. The amount of space occupied by an object






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






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






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






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






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






31. A positive ion.






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






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






34. Any substance that has a definite composition






35. Not having a uniform composition throughout






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






37. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






39. Having a uniform composition throughout






40. 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






41. Atoms of the same element that have different masses






42. The measurement system accepted worldwide

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






44. Lowest energy state of an atom.






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






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






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






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






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






50. A horizontal row of elements in the periodic table