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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. Atoms of the same element that have different masses






2. A measure of the amount of matter






3. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg






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






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






6. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






8. Not having a uniform composition throughout






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






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






11. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






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






16. The general term for any isotope of any element






17. Combination of all the forms of electromagnetic radiation.






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






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






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






21. A high-temperature physical state of matter in which atoms lose their electrons






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






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






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






25. The measurement system accepted worldwide

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26. A positive ion.






27. The amount of space occupied by an object






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






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






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






31. Any substance that has a definite composition






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






33. The arrangement of electrons in an atom






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






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






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






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






38. One wave per second.






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






40. 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.






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






42. Something that has magnitude - size - or amount






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






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






45. The Group 18 elements (helium - neon - argon - krypton - xenon - and radon)






46. Lowest energy state of an atom.






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






48. If two or more different compounds arecomposed of the same two elements - then the ratio of the masses of the secondelement combined with a certain mass of the first element is always a ratio ofsmall whole numbers






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






50. Anything that has mass and takes up space