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






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






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






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






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






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






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






8. Any substance that has a definite composition






9. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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10. The amount of space occupied by an object






11. A horizontal row of elements in the periodic table






12. Something that has magnitude - size - or amount






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






14. Atoms of the same element that have different masses






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






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






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






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






19. The arrangement of electrons in an atom






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






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






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






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






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






25. A vertical column of the periodic table






26. 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.






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






28. The mass of one mole of a pure substance






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






30. A reaction in which one or more substances are converted into different substances






31. One wave per second.






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






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






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






35. A vertical column of the periodic table






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






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






38. Distance between corresponding points on adjacent waves.






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






40. Combination of all the forms of electromagnetic radiation.






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






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






43. 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






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






45. 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






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






47. A substance that reacts in a chemical change






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






49. A substance that is made from the atoms of two or more elements that are chemically bonded






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