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






2. Not having a uniform composition throughout






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






4. The arrangement of electrons in an atom






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






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






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






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






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






10. Lowest energy state of an atom.






11. The closeness of a set of measurements of the same quantity made in the same way






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






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






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






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






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






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






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






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






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






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






22. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






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






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






29. Something that has magnitude - size - or amount






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






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






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






33. 1/2 the distance between the nuclei of identical atoms that are bonded together.






34. A measure of the amount of matter






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






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






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






38. The amount of space occupied by an object






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






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






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






42. A negative ion.






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






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






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






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






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






48. A physical change of a substance from one state to another






49. 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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50. Anything that has mass and takes up space