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






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






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






4. Something that has magnitude - size - or amount






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






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






7. The amount of space occupied by an object






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






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






10. The ratio of mass to volume or mass divided by volume






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






12. The emission of a continuous range of frequencies of electromagnetic radiation.






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






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






15. The measurement system accepted worldwide

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






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






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






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






20. An element that is a good conductor of heat and electricity






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






22. Atoms of the same element that have different masses






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






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






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






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






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






28. Lowest energy state of an atom.






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






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






31. A positive ion.






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






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






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






35. An electron occupies the lowest-energy orbital that can receive it






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






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






38. Anything that has mass and takes up space






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






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






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






42. Combination of all the forms of electromagnetic radiation.






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






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






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






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






47. A testable statement






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






49. A substance that is formed by a chemical change






50. A negative ion.