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






2. State in which an atom has a higher potential energy than it has in it's ground state.






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






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






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






6. The mass of one mole of a pure substance






7. Distance between corresponding points on adjacent waves.






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






9. A substance that reacts in a chemical change






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






11. The general term for any isotope of any element






12. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






14. The amount of space occupied by an object






15. A measure of the amount of matter






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






17. Minimum quantity of energy that can be lost or gained by an atom.






18. Lowest energy state of an atom.






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






20. Combination of all the forms of electromagnetic radiation.






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






22. Emission of electrons from a metal when light shines on a metal.






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






24. A substance that is formed by a chemical change






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






26. Anything that has mass and takes up space






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






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






29. Any substance that has a definite composition






30. The arrangement of electrons in an atom






31. A vertical column of the periodic table






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






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






34. One wave per second.






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






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






37. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number






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






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






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






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






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






43. Two quantities that have a constant mathematical product






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






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






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






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






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






49. 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.


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