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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 smallest unit of an element that maintains the properties of that element






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






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






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






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






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






7. A form of energy that exhibits wavelike behavior as it travels through space (3.00x108 m/s)






8. A horizontal row of elements in the periodic table






9. 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






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






11. A substance that reacts in a chemical change






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






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






14. Two quantities that have a constant mathematical product






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






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






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






18. Having a uniform composition throughout






19. The measurement system accepted worldwide

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






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






22. 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






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






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






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






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






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






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






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






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






31. Not having a uniform composition throughout






32. Something that has magnitude - size - or amount






33. Any substance that has a definite composition






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






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






37. A testable statement






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






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






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






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






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






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






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






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






46. Anything that has mass and takes up space






47. The general term for any isotope of any element






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






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






50. Distance between corresponding points on adjacent waves.