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






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






3. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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4. Combination of all the forms of electromagnetic radiation.






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






6. A negative ion.






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






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






9. A measure of the gravitational pull on matter






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






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






12. 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.






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






14. Two quantities that have a constant mathematical product






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






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






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






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






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






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






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






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






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






24. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.

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25. A vertical column of the periodic table






26. Not having a uniform composition throughout






27. Atoms of the same element that have different masses






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






29. The general term for any isotope of any element






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






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






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






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






34. 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






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






36. The arrangement of electrons in an atom






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






38. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number






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






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






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






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






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






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






45. The measurement system accepted worldwide

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






47. 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






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






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






50. Having a uniform composition throughout