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






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






3. A measure of the amount of matter






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






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






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






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






8. A positive ion.






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






10. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






15. Distance between corresponding points on adjacent waves.






16. A substance that is made from the atoms of two or more elements that are chemically bonded






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






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






19. A measure of the gravitational pull on matter






20. One wave per second.






21. A negative ion.






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






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






24. A horizontal row of elements in the periodic table






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






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






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






28. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






31. Having a uniform composition throughout






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






33. Anything that has mass and takes up space






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






35. 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






36. Something that has magnitude - size - or amount






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






38. A substance that reacts in a chemical change






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






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






41. Atoms of the same element that have different masses






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






43. A substance that is formed by a chemical change






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






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






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






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






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






49. The general term for any isotope of any element






50. Emission of electrons from a metal when light shines on a metal.