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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 negative ion.






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






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






4. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






6. 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.






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






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






9. A positive ion.






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






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






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






13. The measurement system accepted worldwide

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






15. A vertical column of the periodic table






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






17. An element that has some characteristics of metals and some characteristics of nonmetals






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






19. Something that has magnitude - size - or amount






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






21. 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






22. The mass of one mole of a pure substance






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






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






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






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






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






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






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






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






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






32. Lowest energy state of an atom.






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






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






35. Not having a uniform composition throughout






36. Having a uniform composition throughout






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






38. A testable statement






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






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






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






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






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






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






45. The arrangement of electrons in an atom






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






47. 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






48. A substance that is formed by a chemical change






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






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