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






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






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






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






5. A measure of the amount of matter






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






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






8. Something that has magnitude - size - or amount






9. Combination of all the forms of electromagnetic radiation.






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






11. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.






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






13. A vertical column of the periodic table






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






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






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






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






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






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






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






21. Lowest energy state of an atom.






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






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






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






25. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






30. A substance that is formed by a chemical change






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






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






33. Having a uniform composition throughout






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






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






36. Two quantities that have a constant mathematical product






37. If two or more different compounds arecomposed of the same two elements - then the ratio of the masses of the secondelement combined with a certain mass of the first element is always a ratio ofsmall whole numbers






38. A substance that reacts in a chemical change






39. A horizontal row of elements in the periodic table






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






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






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






43. Distance between corresponding points on adjacent waves.






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






45. A positive ion.






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






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






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






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






50. The mass of one mole of a pure substance