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






2. A substance that is formed by a chemical change






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






4. A negative ion.






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






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






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






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






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






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






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






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






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






14. A broad generalization that explains a body of facts or phenomena






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






16. 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.






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






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






19. A positive ion.






20. A horizontal row of elements in the periodic table






21. Two quantities that have a constant mathematical product






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






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






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






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






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






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






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






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






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






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






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






33. A substance that reacts in a chemical change






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






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






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






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






38. Anything that has mass and takes up space






39. Having a uniform composition throughout






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






41. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.






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






43. The arrangement of electrons in an atom






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






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






46. Atoms of the same element that have different masses






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






48. One wave per second.






49. 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






50. A vertical column of the periodic table