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






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






3. A vertical column of the periodic table






4. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data






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






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






7. 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






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






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






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






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






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






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






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






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






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






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






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






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






20. The measurement system accepted worldwide

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






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






23. A measure of the amount of matter






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






25. Not having a uniform composition throughout






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






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






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






29. A vertical column of the periodic table






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






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






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






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






34. 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.






35. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






39. The arrangement of electrons in an atom






40. An element that is a poor conductor of heat and electricity






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






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






43. Having a uniform composition throughout






44. Minimum quantity of energy that can be lost or gained by an 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. The energy required to remove one electron from a neutral atom of an element.






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






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






50. A substance that reacts in a chemical change