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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. Not having a uniform composition throughout






2. 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






3. 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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4. A testable statement






5. A horizontal row of elements in the periodic table






6. A positive ion.






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






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






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






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






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






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






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






14. Having a uniform composition throughout






15. 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.






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






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






18. Combination of all the forms of electromagnetic radiation.






19. One wave per second.






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






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






22. Lowest energy state of an atom.






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






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






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






26. The total amount of energy level an atom has.






27. A substance that is formed by a chemical change






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






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






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






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






32. A vertical column of the periodic table






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






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






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






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






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






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






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






40. Something that has magnitude - size - or amount






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






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






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






44. A change in a substance that does not involve a change in the identity of the substance






45. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






50. 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







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Can you answer 50 questions in 15 minutes?


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