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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 ratio of mass to volume or mass divided by volume






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






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






4. The arrangement of electrons in an atom






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






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






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






8. Any substance that has a definite composition






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






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






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






12. Combination of all the forms of electromagnetic radiation.






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






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






15. Not having a uniform composition throughout






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






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






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






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






20. 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.






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






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






24. Having a uniform composition throughout






25. A negative ion.






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






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






28. Lowest energy state of an atom.






29. The general term for any isotope of any element






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






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






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






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






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






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






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






37. 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






38. The ability of a substance to undergo a change that transforms it into a different substance






39. An explanation of how phenomena occur and how data or events are related






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






41. A measure of the gravitational pull on matter






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






43. A 3D region around the nucleus that indicates the probable location of an electron.






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






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






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






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






48. One wave per second.






49. The measurement system accepted worldwide

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