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






2. 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






3. Lowest energy state of an atom.






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






5. A testable statement






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






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






9. The mass of one mole of a pure substance






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






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






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






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






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






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






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






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






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






20. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






22. Atoms of the same element that have different masses






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






24. A substance that reacts in a chemical change






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






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






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






28. The physical and chemical properties of the elements are periodic functions of their atomic numbers.






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






30. Something that has magnitude - size - or amount






31. One wave per second.






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






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






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






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






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






37. A negative ion.






38. A positive ion.






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






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






41. 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.






42. Distance between corresponding points on adjacent waves.






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






44. The general term for any isotope of any element






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






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






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






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






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






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