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






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






4. Not having a uniform composition throughout






5. 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






6. A horizontal row of elements in the periodic table






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






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






9. A measure of the amount of matter






10. A positive ion.






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






12. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






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






17. A testable statement






18. A measure of the gravitational pull on matter






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






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






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






22. A vertical column of the periodic table






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






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






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






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






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






28. Two quantities that have a constant mathematical product






29. Distance between corresponding points on adjacent waves.






30. A negative ion.






31. Having a uniform composition throughout






32. A substance that is formed by a chemical change






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






34. The arrangement of electrons in an atom






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






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






37. A vertical column of the periodic table






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






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






40. Atoms of the same element that have different masses






41. Combination of all the forms of electromagnetic radiation.






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






43. The general term for any isotope of any element






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






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






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






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






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






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