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






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






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






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






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






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






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






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






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






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






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






13. Two quantities that have a constant mathematical product






14. The ability of a substance to undergo a change that transforms it into a different substance






15. The amount of a substance that contains as many particles as there areatoms in exactly 12 g of carbon-12






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






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






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






19. A substance that is formed by a chemical change






20. One wave per second.






21. The amount of space occupied by an object






22. The measurement system accepted worldwide

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23. Any substance that has a definite composition






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






25. The general term for any isotope of any element






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






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






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






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






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






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






32. A vertical column of the periodic table






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






34. A testable statement






35. Distance between corresponding points on adjacent waves.






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






37. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.






38. Having a uniform composition throughout






39. Lowest energy state of an atom.






40. A positive ion.






41. A measure of the amount of matter






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






43. The arrangement of electrons in an atom






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






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






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






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






48. Something that has magnitude - size - or amount






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






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