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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 elements of group 17 of the periodic table.






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






3. A positive ion.






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






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






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






7. The amount of space occupied by an object






8. The suborbitals of an atom. (S - P - D - F)






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






10. The general term for any isotope of any element






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






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






13. Atoms of the same element that have different masses






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






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






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






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


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






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






20. Two quantities that have a constant mathematical product






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






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






23. A vertical column of the periodic table






24. The mass of one mole of a pure substance






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






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






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






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






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






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






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 measure of the gravitational pull on matter






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






34. 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.


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






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






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






38. A testable statement






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






40. 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






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






42. A measure of the amount of matter






43. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number






44. Anything that has mass and takes up space






45. Something that has magnitude - size - or amount






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






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






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






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






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