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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. The arrangement of electrons in an atom






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






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






5. A substance that reacts in a chemical change






6. Having a uniform composition throughout






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






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






9. 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






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






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






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






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






14. A substance that is formed by a chemical change






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






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






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






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






19. A measure of the amount of matter






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






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






22. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data






23. The general term for any isotope of any element






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






25. Something that has magnitude - size - or amount






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






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






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






29. The mass of one mole of a pure substance






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






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






32. Combination of all the forms of electromagnetic radiation.






33. 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.






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






35. 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






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






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






38. Atoms of the same element that have different masses






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






40. A vertical column of the periodic table






41. Anything that has mass and takes up space






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






43. The amount of space occupied by an object






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






45. Not having a uniform composition throughout






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






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






48. A horizontal row of elements in the periodic table






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






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