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






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






3. Something that has magnitude - size - or amount






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






5. Anything that has mass and takes up space






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






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






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






9. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






11. The general term for any isotope of any element






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






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






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






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






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






17. A substance that reacts in a chemical change






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






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






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






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






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






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






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






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






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






27. Not having a uniform composition throughout






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






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






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






31. The mass of one mole of a pure substance






32. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






35. A positive ion.






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






37. A negative ion.






38. 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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39. Lowest energy state of an atom.






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






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






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






43. Specify the properties of atomic orbitals and the properties of electrons in orbitals.






44. Distance between corresponding points on adjacent waves.






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






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






47. A vertical column of the periodic table






48. 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






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






50. A horizontal row of elements in the periodic table