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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. Lowest energy state of an atom.






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






3. The arrangement of electrons in an atom






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






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






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






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






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






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






10. Two quantities that have a constant mathematical product






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






12. 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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13. A testable statement






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






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






16. Having a uniform composition throughout






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






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






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






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






21. One wave per second.






22. A negative ion.






23. 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






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






25. Not having a uniform composition throughout






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






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






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






29. A horizontal row of elements in the periodic table






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






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






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






33. 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






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






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






36. Something that has magnitude - size - or amount






37. Atoms of the same element that have different masses






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






39. 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.






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






41. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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42. The amount of space occupied by an object






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






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






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






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






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






48. A measure of the amount of matter






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






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