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






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






3. A measure of the gravitational pull on matter






4. The amount of space occupied by an object






5. A negative ion.






6. The mass of one mole of a pure substance






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






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






9. A substance that reacts in a chemical change






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






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






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






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






14. 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






15. Combination of all the forms of electromagnetic radiation.






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






17. 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.






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






19. Distance between corresponding points on adjacent waves.






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






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






22. A testable statement






23. A positive ion.






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






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






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






27. Any substance that has a definite composition






28. A horizontal row of elements in the periodic table






29. A substance that is formed by a chemical change






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






31. Anything that has mass and takes up space






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






33. The measurement system accepted worldwide

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






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






36. One wave per second.






37. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






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






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






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






45. The energy required to remove one electron from a neutral atom of an element.






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






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






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






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






50. 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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