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






2. Any substance that has a definite composition






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






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






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






6. Two quantities that have a constant mathematical product






7. A measure of the amount of matter






8. A negative ion.






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






10. The mass of one mole of a pure substance






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






12. Having a uniform composition throughout






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






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






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






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






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






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






19. A vertical column of the periodic table






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






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






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






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






24. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






26. 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






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






28. A substance that reacts in a chemical change






29. A horizontal row of elements in the periodic table






30. One wave per second.






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






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






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






34. The amount of space occupied by an object






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






36. Atoms of the same element that have different masses






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






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






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






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






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






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






43. The arrangement of electrons in an atom






44. Combination of all the forms of electromagnetic radiation.






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






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






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






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






49. A substance that is formed by a chemical change






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