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






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






3. The general term for any isotope of any element






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






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






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






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






8. The elements of group 2 of the periodic table.






9. The amount of space occupied by an object






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






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






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






13. A testable statement






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






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






16. A substance that reacts in a chemical change






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






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






19. 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






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






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






22. A vertical column of the periodic table






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






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






25. Not having a uniform composition throughout






26. A substance that is formed by a chemical change






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






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






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






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






31. The study of the composition - structure - and properties of matter and the changes it undergoes






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






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






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






35. A vertical column of the periodic table






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






37. Something that has magnitude - size - or amount






38. Lowest energy state of an atom.






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






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






41. Having a uniform composition throughout






42. A negative ion.






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






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






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






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






47. 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






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






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






50. Anything that has mass and takes up space