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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. Something that has magnitude - size - or amount






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






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






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






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






6. Lowest energy state of an atom.






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






8. A vertical column of the periodic table






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






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






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






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






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






14. The ratio of mass to volume or mass divided by volume






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






16. Having a uniform composition throughout






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






18. A vertical column of the periodic table






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






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






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






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






23. 1/2 the distance between the nuclei of identical atoms that are bonded together.






24. The measurement system accepted worldwide


25. The number of protons in the nucleus of each atom of an element






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






27. Any substance that has a definite composition






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






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






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






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






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






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






34. A positive ion.






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






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






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






38. The mass of one mole of a pure substance






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






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






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






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






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






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






45. The arrangement of electrons in an atom






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






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






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






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






50. A measure of the gravitational pull on matter