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






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






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






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






5. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation






6. A substance that reacts in a chemical change






7. 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






8. A substance that is formed by a chemical change






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






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






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






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






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






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






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






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






18. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






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






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






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






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






27. A horizontal row of elements in the periodic table






28. A negative ion.






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






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






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






32. A testable statement






33. 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






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






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






36. Distance between corresponding points on adjacent waves.






37. Lowest energy state of an atom.






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






39. A measure of the gravitational pull on matter






40. Any substance that has a definite composition






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






42. The emission of a continuous range of frequencies of electromagnetic radiation.






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






44. Not having a uniform composition throughout






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






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






47. 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






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






49. 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.






50. Atoms of the same element that have different masses







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Can you answer 50 questions in 15 minutes?


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