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






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






3. A negative ion.






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






5. A measure of the gravitational pull on matter






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






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






8. Not having a uniform composition throughout






9. One wave per second.






10. Lowest energy state of an atom.






11. 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.


12. Two quantities that have a constant mathematical product






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






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






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






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






17. A measure of the amount of matter






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






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






20. The general term for any isotope of any element






21. The arrangement of electrons in an atom






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






23. 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.






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






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






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






27. Atoms of the same element that have different masses






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






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






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






31. 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






32. A vertical column of the periodic table






33. The mass of one mole of a pure substance






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






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






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






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






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






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






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






41. A testable statement






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






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






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






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






46. A broad generalization that explains a body of facts or phenomena






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






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






49. A vertical column of the periodic table






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