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






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






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






4. Not having a uniform composition throughout






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






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






8. The amount of space occupied by an object






9. The mass of one mole of a pure substance






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






11. Lowest energy state of an atom.






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






13. Any substance that has a definite composition






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






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






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






17. The general term for any isotope of any element






18. 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.






19. The arrangement of electrons in an atom






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






21. 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






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






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






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






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






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






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






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






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






30. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






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






35. Something that has magnitude - size - or amount






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






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






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






39. The study of the composition - structure - and properties of matter and the changes it undergoes






40. Atoms of the same element that have different masses






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






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






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






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






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






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






47. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






49. A testable statement






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