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






2. A positive ion.






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






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






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






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






7. The arrangement of electrons in an atom






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






9. Two quantities that have a constant mathematical product






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






11. The general term for any isotope of any element






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






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






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






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






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






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






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






19. Any substance that has a definite composition






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






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






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






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






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






25. Not having a uniform composition throughout






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






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






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






29. An element that is a poor conductor of heat and electricity






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






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






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






33. 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.






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






35. The amount of space occupied by an object






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






37. 1/2 the distance between the nuclei of identical atoms that are bonded together.






38. A horizontal row of elements in the periodic table






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






40. Lowest energy state of an atom.






41. 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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42. The elements of group 2 of the periodic table.






43. Anything that has mass and takes up space






44. Atoms of the same element that have different masses






45. A measure of the amount of matter






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






47. 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






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






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






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