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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. Not having a uniform composition throughout






2. Any substance that has a definite composition






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






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






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






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






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






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






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






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






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






13. Distance between corresponding points on adjacent waves.






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






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






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






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






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






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






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






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






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






23. A substance that is formed by a chemical change






24. A vertical column of the periodic table






25. Which suborbital. (Py - Px - Pz)






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






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






28. A measure of the amount of matter






29. The measurement system accepted worldwide

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






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






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






33. 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.






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






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






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






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






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






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






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






41. The mass of one mole of a pure substance






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






43. Lowest energy state of an atom.






44. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






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






49. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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