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






2. A measure of the amount of matter






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






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






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






6. A horizontal row of elements in the periodic table






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






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






9. A measure of the gravitational pull on matter






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






11. Two quantities that have a constant mathematical product






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






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






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






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






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






17. A positive ion.






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






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






20. The general term for any isotope of any element






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






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






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






24. The amount of space occupied by an object






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






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






27. Anything that has mass and takes up space






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






29. 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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30. Having a uniform composition throughout






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






32. The measurement system accepted worldwide

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33. A ratio derived from the equality between two different units that can be used to convert from one unit to the other






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






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






36. Something that has magnitude - size - or amount






37. Atoms of the same element that have different masses






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






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






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






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






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






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






44. Not having a uniform composition throughout






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






46. 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






47. A substance that reacts in a chemical change






48. Which suborbital. (Py - Px - Pz)






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






50. A negative ion.