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






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






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






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






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






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






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






8. 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.






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






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






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






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






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






14. A negative ion.






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






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






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






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






19. Not having a uniform composition throughout






20. A vertical column of the periodic table






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






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






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






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






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






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






27. Lowest energy state of an atom.






28. The measurement system accepted worldwide

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29. Anything that has mass and takes up space






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






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






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






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






34. One wave per second.






35. Having a uniform composition throughout






36. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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37. The arrangement of electrons in an atom






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






39. Two quantities that have a constant mathematical product






40. A measure of the amount of matter






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






42. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






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






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






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






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






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