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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 smallest unit of an element that maintains the properties of that element






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






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






4. Anything that has mass and takes up space






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






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






7. Not having a uniform composition throughout






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






9. A measure of the amount of matter






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






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






12. Combination of all the forms of electromagnetic radiation.






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






14. 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






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






16. A vertical column of the periodic table






17. Lowest energy state of an atom.






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






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






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






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






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






23. The total amount of energy level an atom has.






24. A testable statement






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






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






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






28. The amount of space occupied by an object






29. A chemical compound contains the same elementsin exactly the same proportions by mass regardless of the size of the sample orthe source of the compound






30. Two quantities that have a constant mathematical product






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






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






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






34. Distance between corresponding points on adjacent waves.






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






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






37. A substance that is formed by a chemical change






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






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






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






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






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






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






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






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






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






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






48. 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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49. Specify the properties of atomic orbitals and the properties of electrons in orbitals.






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