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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 measurement system accepted worldwide

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






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






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






5. 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






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






7. The elements of group 1 of the periodic table.






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






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






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






11. A vertical column of the periodic table






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






13. Having a uniform composition throughout






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






15. 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.






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






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






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






19. Combination of all the forms of electromagnetic radiation.






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






21. One wave per second.






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






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






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






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






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






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






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






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






30. A measure of the gravitational pull on matter






31. Any substance that has a definite composition






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






33. A horizontal row of elements in the periodic table






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






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






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






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






38. A substance that reacts in a chemical change






39. A negative ion.






40. A measure of the amount of matter






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






42. Any process that results in the formation of an ion.






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






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






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






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






47. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.

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48. A positive ion.






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






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