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






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






3. Distance between corresponding points on adjacent waves.






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






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






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






7. A testable statement






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






9. Something that has magnitude - size - or amount






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






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






12. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






16. A high-temperature physical state of matter in which atoms lose their electrons






17. A horizontal row of elements in the periodic table






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






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






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






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






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






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






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






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






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






27. A vertical column of the periodic table






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






29. A vertical column of the periodic table






30. A measure of the amount of matter






31. 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






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






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






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


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






36. The mass of one mole of a pure substance






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






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






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






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






41. Lowest energy state of an atom.






42. 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






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






44. Any substance that has a definite composition






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






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






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






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






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






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