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

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






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






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






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






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






7. A vertical column of the periodic table






8. Two quantities that have a constant mathematical product






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






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






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






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






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






14. 1/2 the distance between the nuclei of identical atoms that are bonded together.






15. The arrangement of electrons in an atom






16. 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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17. Distance between corresponding points on adjacent waves.






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






19. One wave per second.






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






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






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






23. A testable statement






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






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






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






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






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






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






30. The mass of one mole of a pure substance






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






32. A substance that reacts in a chemical change






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






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






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






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






37. A measure of the gravitational pull on matter






38. A measure of the amount of matter






39. 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.






40. 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






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






42. 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






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






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






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






46. 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






47. A negative ion.






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






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






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