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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. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg






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






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






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






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






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






8. Combination of all the forms of electromagnetic radiation.






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






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






11. The arrangement of electrons in an atom






12. Two quantities that have a constant mathematical product






13. The measurement system accepted worldwide

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14. A horizontal row of elements in the periodic table






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






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






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






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






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






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






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






22. The amount of space occupied by an object






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






24. A positive ion.






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






26. A substance that reacts in a chemical change






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






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






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






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






31. 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






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






33. 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






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






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






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






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






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






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






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






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






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






43. A negative ion.






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






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






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






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






48. 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.






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






50. A measure of the gravitational pull on matter