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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 14 elements with the atomic numbers 58-71.






2. The measurement system accepted worldwide

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






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






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






7. The mass of one mole of a pure substance






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






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






10. A measure of the gravitational pull on matter






11. A measure of the amount of matter






12. A unit that is a combination of SI base units






13. The general term for any isotope of any element






14. 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






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






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






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






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






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






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






21. Atoms of the same element that have different masses






22. A negative ion.






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






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






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






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






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






29. Narrow beam of the emitted light was shined through a prism - it was separated into four specific colors of the visible spectrum.






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






31. A vertical column of the periodic table






32. Not having a uniform composition throughout






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






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






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






36. Something that has magnitude - size - or amount






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






38. A horizontal row of elements in the periodic table






39. The d-block elements are metals with typical metallic properties.






40. Combination of all the forms of electromagnetic radiation.






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






42. The arrangement of electrons in an atom






43. Lowest energy state of an atom.






44. The amount of space occupied by an object






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






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






47. Anything that has mass and takes up space






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






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






50. 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