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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. Any substance that has a definite composition






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






3. A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound.






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






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






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






7. The amount of space occupied by an object






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






9. A vertical column of the periodic table






10. 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






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






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






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






15. 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






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






17. Combination of all the forms of electromagnetic radiation.






18. 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.






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






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






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






22. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation






23. A substance that is formed by a chemical change






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






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






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






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






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






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






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






31. A positive ion.






32. Something that has magnitude - size - or amount






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






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






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






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






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






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






39. The measurement system accepted worldwide

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






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






42. The 14 elements with the atomic numbers 90-103.






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






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






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






46. The general term for any isotope of any element






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






48. A measure of the amount of matter






49. Anything that has mass and takes up space






50. Two quantities that have a constant mathematical product







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