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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. One wave per second.






2. The amount of space occupied by an object






3. Not having a uniform composition throughout






4. The mass of one mole of a pure substance






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






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






7. Having a uniform composition throughout






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






9. A measure of the gravitational pull on matter






10. States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.






11. The measurement system accepted worldwide

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






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






14. Distance between corresponding points on adjacent waves.






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






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






17. Something that has magnitude - size - or amount






18. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






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






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






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






26. A positive ion.






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






28. A measure of the amount of matter






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






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






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






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






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






34. 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






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






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






37. A characteristic that can be observed or measured without changing the identity of the substance






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






39. A substance that is formed by a chemical change






40. Lowest energy state of an atom.






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






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






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






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






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






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






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






48. Describes mathematically the wave properties of electrons and other very small particles.






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






50. 1/2 the distance between the nuclei of identical atoms that are bonded together.