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






2. The mass of one mole of a pure substance






3. Lowest energy state of an atom.






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






5. The general term for any isotope of any element






6. Something that has magnitude - size - or amount






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






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






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






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






11. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






14. A horizontal row of elements in the periodic table






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






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






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






18. Which suborbital. (Py - Px - Pz)






19. A negative ion.






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






22. One wave per second.






23. A substance that reacts in a chemical change






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






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






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






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






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






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






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






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






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






35. The closeness of a set of measurements of the same quantity made in the same way






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






37. Two quantities that have a constant mathematical product






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






39. The suborbitals of an atom. (S - P - D - F)






40. Having a uniform composition throughout






41. The ability of a substance to undergo a change that transforms it into a different substance






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






43. Combination of all the forms of electromagnetic radiation.






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






45. A vertical column of the periodic table






46. 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.






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






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






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






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