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






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






3. A substance that is formed by a chemical change






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






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






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






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






8. The measurement system accepted worldwide


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






10. The amount of space occupied by an object






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






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






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






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






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






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






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






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






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






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






21. A form of energy that exhibits wavelike behavior as it travels through space (3.00x108 m/s)






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






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






24. A vertical column of the periodic table






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






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. The elements of group 17 of the periodic table.






28. Something that has magnitude - size - or amount






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






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






31. A measure of the amount of matter






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






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






34. A substance that reacts in a chemical change






35. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






37. An element that is a good conductor of heat and electricity






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






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






40. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg






41. The general term for any isotope of any element






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






43. A vertical column of the periodic table






44. Combination of all the forms of electromagnetic radiation.






45. Any substance that has a definite composition






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






47. 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






48. Having a uniform composition throughout






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






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