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






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






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






4. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance


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






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






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






8. A horizontal row of elements in the periodic table






9. 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






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






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






12. A substance that is formed by a chemical change






13. 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.






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






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






16. 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.


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






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






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






20. One wave per second.






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






22. A vertical column of the periodic table






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






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






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






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






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






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






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






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






31. The arrangement of electrons in an atom






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






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






34. A substance that reacts in a chemical change






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






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






37. Distance between corresponding points on adjacent waves.






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






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






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






41. A negative ion.






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






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






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






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






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






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






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






49. Having a uniform composition throughout






50. The general term for any isotope of any element