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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 measurement system accepted worldwide


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






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






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






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






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






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






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






9. Not having a uniform composition throughout






10. 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






11. A negative ion.






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






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






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






15. An element that has some characteristics of metals and some characteristics of nonmetals






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






17. The elements of group 1 of the periodic table.






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






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






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






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






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






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






24. Two quantities that give a constant value when one is divided by the other






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






26. 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.






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






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






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






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






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






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






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






34. 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






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






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






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






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






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






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






41. The general term for any isotope of any element






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






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






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






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






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






47. A positive ion.






48. 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






49. The mass of one mole of a pure substance






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