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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. Not having a uniform composition throughout






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






3. Lowest energy state of an atom.






4. Having a uniform composition throughout






5. The measurement system accepted worldwide

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6. Any substance that has a definite composition






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






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






9. The arrangement of electrons in an atom






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






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






12. 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






13. A property that does not depend on the amount of matter present






14. Something that has magnitude - size - or amount






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






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






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






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






19. One wave per second.






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






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






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






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






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






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






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






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






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






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






30. A substance that is formed by a chemical change






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






32. A measure of the amount of matter






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






34. Distance between corresponding points on adjacent waves.






35. The mass of one mole of a pure substance






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






37. A vertical column of the periodic table






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






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






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 general term for any isotope of any element






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






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






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






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






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






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






48. Combination of all the forms of electromagnetic radiation.






49. 1/2 the distance between the nuclei of identical atoms that are bonded together.






50. A measure of the gravitational pull on matter