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






2. 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






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






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






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






7. A positive ion.






8. The amount of space occupied by an object






9. The general term for any isotope of any element






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






11. A horizontal row of elements in the periodic table






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






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






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






15. Lowest energy state of an atom.






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






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






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






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






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






21. Any substance that has a definite composition






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






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






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






25. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






28. 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






29. A testable statement






30. The measurement system accepted worldwide

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31. Two quantities that have a constant mathematical product






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






33. A vertical column of the periodic table






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






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






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






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






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






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






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






41. 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.






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






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






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






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






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






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






48. A measure of the gravitational pull on matter






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






50. A measure of the amount of matter