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






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






3. 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






4. A measure of the gravitational pull on matter






5. A measure of the amount of matter






6. A testable statement






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






8. Having a uniform composition throughout






9. Not having a uniform composition throughout






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






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






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






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






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






15. A vertical column of the periodic table






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






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






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






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






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






21. A horizontal row of elements in the periodic table






22. Lowest energy state of an atom.






23. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






26. 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






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






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






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






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






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






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






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






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






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






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






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






38. 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






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






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






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






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






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






44. 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.






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






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






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






48. One wave per second.






49. The mass of one mole of a pure substance






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.

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