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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 substance that is formed by a chemical change






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






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






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






5. A substance that reacts in a chemical change






6. Any substance that has a definite composition






7. A positive ion.






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






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






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






11. Something that has magnitude - size - or amount






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






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






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






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






16. 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






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






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






19. A property that does not depend on the amount of matter present






20. A horizontal row of elements in the periodic table






21. A vertical column of the periodic table






22. A 3D region around the nucleus that indicates the probable location of an electron.






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






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






25. The measurement system accepted worldwide

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






27. Atoms of the same element that have different masses






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






29. A negative ion.






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






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






32. Two quantities that have a constant mathematical product






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






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






35. One wave per second.






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






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






38. The mass of one mole of a pure substance






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






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






41. Not having a uniform composition throughout






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






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






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






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






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






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






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






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