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






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






3. 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.






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






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






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






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






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






9. A negative ion.






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






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






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






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






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






15. Two quantities that have a constant mathematical product






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






17. Any substance that has a definite composition






18. An element that has some characteristics of metals and some characteristics of nonmetals






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






20. Not having a uniform composition throughout






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






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






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






24. Having a uniform composition throughout






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






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






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






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






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






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






31. Anything that has mass and takes up space






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






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






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






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






36. Combination of all the forms of electromagnetic radiation.






37. 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






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






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






40. A vertical column of the periodic table






41. Lowest energy state of an atom.






42. A horizontal row of elements in the periodic table






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






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






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






46. A pure substance made of only one kind of atom






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






48. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






50. Atoms of the same element that have different masses