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






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






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






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






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






7. A horizontal row of elements in the periodic table






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






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






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






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






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






13. The general term for any isotope of any element






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






15. The arrangement of electrons in an atom






16. Two quantities that have a constant mathematical product






17. Atoms of the same element that have different masses






18. A substance that is formed by a chemical change






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






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






21. A positive ion.






22. A testable statement






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






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






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






27. The ratio of mass to volume or mass divided by volume






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






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






30. Lowest energy state of an atom.






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






32. The amount of space occupied by an object






33. A negative ion.






34. The measurement system accepted worldwide

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






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






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






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






40. A vertical column of the periodic table






41. Any substance that has a definite composition






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






43. Distance between corresponding points on adjacent waves.






44. A measure of the gravitational pull on matter






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






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






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






48. Combination of all the forms of electromagnetic radiation.






49. Anything that has mass and takes up space






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







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Can you answer 50 questions in 15 minutes?


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