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






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






3. A substance that reacts in a chemical change






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






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






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






7. Something that has magnitude - size - or amount






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






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






10. A vertical column of the periodic table






11. The amount of space occupied by an object






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






13. 1/2 the distance between the nuclei of identical atoms that are bonded together.






14. 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.


15. 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.






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






17. Atoms of the same element that have different masses






18. The mass of one mole of a pure substance






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






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






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






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






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






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






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






26. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance


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






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






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






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






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






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






33. The arrangement of electrons in an atom






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






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






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






37. Any substance that has a definite composition






38. Anything that has mass and takes up space






39. A negative ion.






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






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






42. One wave per second.






43. A measure of the amount of matter






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






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






46. A measure of the gravitational pull on matter






47. A horizontal row of elements in the periodic table






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






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






50. Combination of all the forms of electromagnetic radiation.