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






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






3. Not having a uniform composition throughout






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






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






6. The mass of one mole of a pure substance






7. The general term for any isotope of any element






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






9. A substance that reacts in a chemical change






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






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






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






13. The amount of space occupied by an object






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






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






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






17. A testable statement






18. 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






19. 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






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






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






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






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






24. 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






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






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






27. 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.






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






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






30. A vertical column of the periodic table






31. Anything that has mass and takes up space






32. One wave per second.






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






34. A substance that is formed by a chemical change






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






36. The p-block elements together with the s-block elements.






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






38. The total number of protons and neutrons in the nucleus of an isotope






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






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






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






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






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






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






45. Distance between corresponding points on adjacent waves.






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






47. Which suborbital. (Py - Px - Pz)






48. The measurement system accepted worldwide

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






50. Atoms of the same element that have different masses