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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. 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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2. The arrangement of electrons in an atom






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






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






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






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






7. A positive ion.






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






9. A reaction in which one or more substances are converted into different substances






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






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






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






13. Not having a uniform composition throughout






14. A substance that is formed by a chemical change






15. 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






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






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






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






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






20. The amount of space occupied by an object






21. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






25. The general term for any isotope of any element






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






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






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






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






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






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






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






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






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






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






36. Atoms of the same element that have different masses






37. A testable statement






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






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






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






41. A vertical column of the periodic table






42. Having a uniform composition throughout






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






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






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






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






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






48. Two quantities that have a constant mathematical product






49. Any substance that has a definite composition






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