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






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






3. 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.






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






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






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






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






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






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






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






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






12. 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






13. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






15. A change in a substance that does not involve a change in the identity of the substance






16. A horizontal row of elements in the periodic table






17. Something that has magnitude - size - or amount






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






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






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






21. The measurement system accepted worldwide


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






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






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






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






26. Lowest energy state of an atom.






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






28. Combination of all the forms of electromagnetic radiation.






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






30. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance


31. 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






32. A property that depends on the amount of matter that is present






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






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






35. The arrangement of electrons in an atom






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






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






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






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






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






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






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






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






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






45. Having a uniform composition throughout






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






47. A positive ion.






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






49. Atoms of the same element that have different masses






50. The amount of space occupied by an object