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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 mass of one mole of a pure substance






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






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






4. Having a uniform composition throughout






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






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






7. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






9. The general term for any isotope of any element






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






11. Distance between corresponding points on adjacent waves.






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






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






14. 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






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






16. One wave per second.






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






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






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






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






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






22. A testable statement






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






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






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






26. A negative ion.






27. A measure of the amount of matter






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






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






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






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






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






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






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






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






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






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






38. The suborbitals of an atom. (S - P - D - F)






39. Lowest energy state of an atom.






40. A vertical column of the periodic table






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






42. The arrangement of electrons in an atom






43. Atoms of the same element that have different masses






44. Something that has magnitude - size - or amount






45. A positive ion.






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






47. The amount of space occupied by an object






48. A measure of the gravitational pull on matter






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






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