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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 smallest unit of an element that maintains the properties of that element






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






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






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






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






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






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






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






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






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






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






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






13. A testable statement






14. Anything that has mass and takes up space






15. 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






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






17. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance


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






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






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






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






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






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






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






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






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






27. A vertical column of the periodic table






28. A substance that reacts in a chemical change






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






31. 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.






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






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






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






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






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






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






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






39. Lowest energy state of an atom.






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






41. No two electrons in the same atom can have the same set of four quantum numbers






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






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






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






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






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






47. Combination of all the forms of electromagnetic radiation.






48. Atoms of the same element that have different masses






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






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