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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 unit that is a combination of SI base units






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






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






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






5. A measure of the gravitational pull on matter






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






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






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






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






10. One wave per second.






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






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






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






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






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






16. A substance that is formed by a chemical change






17. The p-block elements together with the s-block elements.






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






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






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






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






22. A vertical column of the periodic table






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






24. 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.






25. A substance that reacts in a chemical change






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






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






28. A testable statement






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






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






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






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






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






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






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






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






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






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






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






40. Any substance that has a definite composition






41. Lowest energy state of an atom.






42. The general term for any isotope of any element






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






44. A vertical column of the periodic table






45. The measurement system accepted worldwide

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






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






48. 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






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






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