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






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






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






4. The elements of group 17 of the periodic table.






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






6. 1/2 the distance between the nuclei of identical atoms that are bonded together.






7. The physical and chemical properties of the elements are periodic functions of their atomic numbers.






8. A vertical column of the periodic table






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






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






11. A negative ion.






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






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






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






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






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






17. An electron occupies the lowest-energy orbital that can receive it






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






19. The elements of group 2 of the periodic table.






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






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






22. 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






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






24. Distance between corresponding points on adjacent waves.






25. A measure of the gravitational pull on matter






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






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






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






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






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






31. The amount of space occupied by an object






32. Not having a uniform composition throughout






33. Having a uniform composition throughout






34. The mass of one mole of a pure substance






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






36. One wave per second.






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






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






39. A testable statement






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






41. A horizontal row of elements in the periodic table






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






43. A change in which one or more substances are converted into different substances






44. The Group 18 elements (helium - neon - argon - krypton - xenon - and radon)






45. Something that has magnitude - size - or amount






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






47. 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






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






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






50. A substance that is formed by a chemical change