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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. Any substance that has a definite composition






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






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






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






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






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






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






8. 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






9. A measure of the gravitational pull on matter






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






11. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






13. The mass of one mole of a pure substance






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 substance that is formed by a chemical change






16. A measure of the amount of matter






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






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






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






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






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






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






23. Distance between corresponding points on adjacent waves.






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






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






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






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






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






29. Combination of all the forms of electromagnetic radiation.






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






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






32. The weighted average of the atomic masses of thenaturally occurring isotopes of an element






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






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






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






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






37. The measurement system accepted worldwide

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






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






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






41. Not having a uniform composition throughout






42. A negative ion.






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






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






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






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






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






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






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






50. A positive ion.