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






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






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






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






5. Emission of electrons from a metal when light shines on a metal.






6. Something that has magnitude - size - or amount






7. A substance that reacts in a chemical change






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






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






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






11. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation






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






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






14. The general term for any isotope of any element






15. A substance that is formed by a chemical change






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






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






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






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






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






21. The amount of space occupied by an object






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






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






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






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






26. Distance between corresponding points on adjacent waves.






27. 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






28. The p-block elements together with the s-block elements.






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






30. Number of waves that pass a given point in a specific time - usually one second.






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






32. A measure of the gravitational pull on matter






33. Combination of all the forms of electromagnetic radiation.






34. The mass of one mole of a pure substance






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






36. The energy change that occurs when an electron is acquired by a neutral atom.






37. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






39. Anything that has mass and takes up space






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






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






42. A vertical column of the periodic table






43. A measure of the amount of matter






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






45. A negative ion.






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






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






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






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






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