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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. Something that has magnitude - size - or amount






2. One wave per second.






3. The 14 elements with the atomic numbers 58-71.






4. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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5. A substance that is formed by a chemical change






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






7. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data






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






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






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






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






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






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






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






15. An outer main energy level occupied - in most cases - by 8 electrons






16. A measure of the gravitational pull on matter






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






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






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. Which way it spins. (up or down)






21. Anything that has mass and takes up space






22. 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.






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






24. Having a uniform composition throughout






25. A measure of the amount of matter






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






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






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






29. Atoms of the same element that have different masses






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






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






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






33. Distance between corresponding points on adjacent waves.






34. 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






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






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






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






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






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






40. 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






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






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






43. Lowest energy state of an atom.






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






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






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






47. Any substance that has a definite composition






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






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






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