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






2. The measurement system accepted worldwide

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






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






5. 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.






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






7. Two quantities that have a constant mathematical product






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






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






10. 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






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






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






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






14. A substance that is formed by a chemical change






15. Any substance that has a definite composition






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






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






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






19. 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






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






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






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






23. The arrangement of electrons in an atom






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






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






26. A substance that reacts in a chemical change






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






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






29. The general term for any isotope of any element






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






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






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






33. One wave per second.






34. Anything that has mass and takes up space






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






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






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






38. A measure of the amount of matter






39. Something that has magnitude - size - or amount






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






41. Not having a uniform composition throughout






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






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






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






45. Distance between corresponding points on adjacent waves.






46. A vertical column of the periodic table






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






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






49. A testable statement






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