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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. A measure of the amount of matter






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






3. 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






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






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






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






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






8. A substance that reacts in a chemical change






9. Anything that has mass and takes up space






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






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






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






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






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






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






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






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






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






19. The general term for any isotope of any element






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






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






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






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






24. A positive ion.






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






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






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






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






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






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






31. The mass of one mole of a pure substance






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






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






34. A change in a substance that does not involve a change in the identity of the substance






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






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






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






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






39. Distance between corresponding points on adjacent waves.






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






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






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






43. State in which an atom has a higher potential energy than it has in it's ground state.






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






45. A horizontal row of elements in the periodic table






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






47. Having a uniform composition throughout






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






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






50. A vertical column of the periodic table







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