Test your basic knowledge |

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






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






3. A substance that reacts in a chemical change






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






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






6. One wave per second.






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






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






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






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






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






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






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






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






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






17. Something that has magnitude - size - or amount






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






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






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






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






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






23. A vertical column of the periodic table






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






25. The number of protons in the nucleus of each atom of an element






26. A horizontal row of elements in the periodic table






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






28. Any substance that has a definite composition






29. The mass of one mole of a pure substance






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






31. Two quantities that have a constant mathematical product






32. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg






33. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






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






38. A measure of the amount of matter






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






40. 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






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






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






43. A substance that is formed by a chemical change






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






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






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






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






48. Atoms of the same element that have different masses






49. The general term for any isotope of any element






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