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






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






3. The arrangement of electrons in an atom






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






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






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






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






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






9. A vertical column of the periodic table






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






11. Something that has magnitude - size - or amount






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






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






14. Distance between corresponding points on adjacent waves.






15. The measurement system accepted worldwide

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16. A horizontal row of elements in the periodic table






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






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






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






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






21. A testable statement






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






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






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






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






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






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






28. A chemical compound contains the same elementsin exactly the same proportions by mass regardless of the size of the sample orthe source of the compound






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






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






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






32. Two quantities that have a constant mathematical product






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






34. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






38. A substance that reacts in a chemical change






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






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






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






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






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






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






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






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






47. A substance that is formed by a chemical change






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






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






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