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






3. The d-block elements are metals with typical metallic properties.






4. Lowest energy state of an atom.






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






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






7. 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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8. The elements of group 1 of the periodic table.






9. The amount of space occupied by an object






10. A negative ion.






11. 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






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






13. A vertical column of the periodic table






14. A measure of the amount of matter






15. Describes mathematically the wave properties of electrons and other very small particles.






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






17. Anything that has mass and takes up space






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






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






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






21. A positive ion.






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






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






24. Two quantities that have a constant mathematical product






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






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






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






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






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






30. Having a uniform composition throughout






31. Atoms of the same element that have different masses






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






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






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






35. Something that has magnitude - size - or amount






36. 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






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






38. 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






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






40. Combination of all the forms of electromagnetic radiation.






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






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






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






44. Distance between corresponding points on adjacent waves.






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






46. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






48. The ratio of mass to volume or mass divided by volume






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






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







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Can you answer 50 questions in 15 minutes?


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