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






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






4. The measurement system accepted worldwide

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






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






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






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






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






10. A substance that reacts in a chemical change






11. Any substance that has a definite composition






12. The general term for any isotope of any element






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






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






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






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






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






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






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






20. Having a uniform composition throughout






21. One wave per second.






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






23. Two quantities that have a constant mathematical product






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






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






26. A negative ion.






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






28. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






31. Combination of all the forms of electromagnetic radiation.






32. Distance between corresponding points on adjacent waves.






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






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






35. 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






36. A measure of the amount of matter






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






38. The total amount of energy level an atom has.






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






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






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






42. 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.






43. No two electrons in the same atom can have the same set of four quantum numbers






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






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






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






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






48. The mass of one mole of a pure substance






49. A positive ion.






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