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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 testable statement






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






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






4. A horizontal row of elements in the periodic table






5. Any substance that has a definite composition






6. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






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






11. The measurement system accepted worldwide

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12. A vertical column of the periodic table






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






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






15. A negative ion.






16. A form of energy that exhibits wavelike behavior as it travels through space (3.00x108 m/s)






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






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






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






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






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






22. Atoms of the same element that have different masses






23. Something that has magnitude - size - or amount






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






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






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






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






28. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






30. The general term for any isotope of any element






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






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






33. A positive ion.






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






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






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






37. Having a uniform composition throughout






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






39. 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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40. A vertical column of the periodic table






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






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






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






44. 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






45. 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






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






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






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






49. Not having a uniform composition throughout






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