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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 pure substance made of only one kind of atom






2. The general term for any isotope of any element






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






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






5. The closeness of measurements to the correct or accepted value of the quantity measured






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






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






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






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






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






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






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






13. The electrons available to be lost - gained - or shared in the formation of chemical compounds.






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






15. A vertical column of the periodic table






16. The measurement system accepted worldwide

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






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






19. The arrangement of electrons in an atom






20. Two quantities that have a constant mathematical product






21. Having a uniform composition throughout






22. 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






23. The mass of one mole of a pure substance






24. The 14 elements with the atomic numbers 58-71.






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






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






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






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






29. A positive ion.






30. 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.






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






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






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






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






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






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






37. A vertical column of the periodic table






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






39. 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






40. Something that has magnitude - size - or amount






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






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






43. The physical and chemical properties of the elements are periodic functions of their atomic numbers.






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






45. The suborbitals of an atom. (S - P - D - F)






46. A measure of the amount of matter






47. A testable statement






48. A measure of the gravitational pull on matter






49. Not having a uniform composition throughout






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







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Can you answer 50 questions in 15 minutes?


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