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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 change in a substance that does not involve a change in the identity of the substance






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






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






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






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






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






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






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






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






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






11. A negative ion.






12. Something that has magnitude - size - or amount






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






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






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






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






17. A horizontal row of elements in the periodic table






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






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






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






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






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






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






24. The general term for any isotope of any element






25. A positive ion.






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






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






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






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






30. The measurement system accepted worldwide

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31. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






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






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






37. A substance that is formed by a chemical change






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






39. A measure of the amount of matter






40. Not having a uniform composition throughout






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






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






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






44. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.

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






46. Any substance that has a definite composition






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






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






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






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