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






2. A testable statement






3. A vertical column of the periodic table






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






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






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






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






8. Anything that has mass and takes up space






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






10. A positive ion.






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






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






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






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






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






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






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






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






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






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






21. Distance between corresponding points on adjacent waves.






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






23. A measure of the amount of matter






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






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






26. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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27. A measure of the gravitational pull on matter






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






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






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






31. States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.






32. 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






33. A unit that is a combination of SI base units






34. Any substance that has a definite composition






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






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






37. One wave per second.






38. Combination of all the forms of electromagnetic radiation.






39. The arrangement of electrons in an atom






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






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






42. Lowest energy state of an atom.






43. The general term for any isotope of any element






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






45. The mass of one mole of a pure substance






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






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






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






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






50. The amount of space occupied by an object