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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 d-block elements are metals with typical metallic properties.






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






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






4. A substance that reacts in a chemical change






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






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






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






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






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






10. A testable statement






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






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






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






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






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






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






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






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






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






20. Two quantities that have a constant mathematical product






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






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






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






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






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






26. A positive ion.






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






28. Lowest energy state of an atom.






29. Anything that has mass and takes up space






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






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






32. 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






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






34. Any substance that has a definite composition






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






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






37. Atoms of the same element that have different masses






38. A vertical column of the periodic table






39. 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






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






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






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






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






44. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance


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






46. A vertical column of the periodic table






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






48. A measure of the amount of matter






49. A measure of the gravitational pull on matter






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