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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 electrons available to be lost - gained - or shared in the formation of chemical compounds.






2. The general term for any isotope of any element






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






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






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






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






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






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






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






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






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






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






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






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






15. A negative ion.






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






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






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






19. A measure of the gravitational pull on matter






20. A blend of two or more kinds of matter - each of which retains its own identity and properties






21. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






23. A positive ion.






24. Any substance that has a definite composition






25. Distance between corresponding points on adjacent waves.






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






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






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






29. An element that is a good conductor of heat and electricity






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






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






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






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






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






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






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






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






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






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






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






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






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






43. Atoms of the same element that have different masses






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






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






46. 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.






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






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






49. Lowest energy state of an atom.






50. Not having a uniform composition throughout