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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 horizontal row of elements in the periodic table






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






3. Two quantities that have a constant mathematical product






4. A substance that reacts in a chemical change






5. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






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






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






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






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






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






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






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






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






17. The arrangement of electrons in an atom






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






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






20. The amount of space occupied by an object






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






22. Any digit in a measurement that is known with certainty plus one final digit - which is somewhat uncertain or is estimated






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






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






25. The mass of one mole of a pure substance






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






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






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






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






30. Atoms of the same element that have different masses






31. A vertical column of the periodic table






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






33. A testable statement






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






35. The general term for any isotope of any element






36. Any substance that has a definite composition






37. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance


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






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






40. A vertical column of the periodic table






41. A reaction in which one or more substances are converted into different substances






42. 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






43. Having a uniform composition throughout






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






45. Anything that has mass and takes up space






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






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






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






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






50. 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.