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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. 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.






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






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






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






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






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






7. A negative ion.






8. 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






9. The measurement system accepted worldwide

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






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






12. Anything that has mass and takes up space






13. 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






14. A vertical column of the periodic table






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






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






17. The mass of one mole of a pure substance






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






19. A positive ion.






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






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






22. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.

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






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






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






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






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






28. A testable statement






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






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






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






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






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






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






35. Combination of all the forms of electromagnetic radiation.






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






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






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






39. 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






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






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






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






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






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






45. Something that has magnitude - size - or amount






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






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






48. Lowest energy state of an atom.






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






50. A vertical column of the periodic table







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