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






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






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






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






5. Lowest energy state of an atom.






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






7. Anything that has mass and takes up space






8. A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound.






9. 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.






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






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






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






13. A pure substance made of only one kind of atom






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






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






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






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






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






19. The measurement system accepted worldwide

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






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






22. Something that has magnitude - size - or amount






23. A positive ion.






24. A testable statement






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






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






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






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






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






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






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






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






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






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






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






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






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






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






39. A substance that reacts in a chemical change






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






41. One wave per second.






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






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






44. A horizontal row of elements in the periodic table






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






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






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






49. Distance between corresponding points on adjacent waves.






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