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






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






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






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






5. An element that has some characteristics of metals and some characteristics of nonmetals






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






7. A measure of the gravitational pull on matter






8. Distance between corresponding points on adjacent waves.






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






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






11. The general term for any isotope of any element






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






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






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






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






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






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






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






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






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






22. 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






23. 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






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






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






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






27. A negative ion.






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






29. Combination of all the forms of electromagnetic radiation.






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






31. The d-block elements are metals with typical metallic properties.






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






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






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






35. A horizontal row of elements in the periodic table






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






37. The mass of one mole of a pure substance






38. Having a uniform composition throughout






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






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






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






42. 1/2 the distance between the nuclei of identical atoms that are bonded together.






43. One wave per second.






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






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






46. The amount of space occupied by an object






47. 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.






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






49. A vertical column of the periodic table






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