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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 property that depends on the amount of matter that is present






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






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






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






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






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






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






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






9. Lowest energy state of an atom.






10. A testable statement






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






12. Combination of all the forms of electromagnetic radiation.






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






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






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






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






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






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






19. Atoms of the same element that have different masses






20. A vertical column of the periodic table






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






22. A substance that reacts in a chemical change






23. The general term for any isotope of any element






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






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






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






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






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






29. 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






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






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






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






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






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






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






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






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






38. An outer main energy level occupied - in most cases - by 8 electrons






39. The amount of space occupied by an object






40. A substance that is formed by a chemical change






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






42. A vertical column of the periodic table






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






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






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






46. Which way it spins. (up or down)






47. 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






48. A measure of the amount of matter






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






50. Anything that has mass and takes up space