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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 number of protons in the nucleus of each atom of an element






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






3. A horizontal row of elements in the periodic table






4. 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.


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






6. Anything that has mass and takes up space






7. Not having a uniform composition throughout






8. Something that has magnitude - size - or amount






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






10. Any substance that has a definite composition






11. 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.






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






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






14. 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






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






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






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






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






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






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






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






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






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






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






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






27. A vertical column of the periodic table






28. 1/2 the distance between the nuclei of identical atoms that are bonded together.






29. 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






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






31. Lowest energy state of an atom.






32. The amount of space occupied by an object






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






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






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






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






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






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






39. One wave per second.






40. A ratio derived from the equality between two different units that can be used to convert from one unit to the other






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






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






43. The mass of one mole of a pure substance






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






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






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






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






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






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






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