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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. Which way it spins. (up or down)






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






3. Lowest energy state of an atom.






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






5. Distance between corresponding points on adjacent waves.






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






7. One wave per second.






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






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






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






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






12. The measurement system accepted worldwide


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






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






15. The amount of space occupied by an object






16. The elements of group 1 of the periodic table.






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






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






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






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






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






22. A measure of the gravitational pull on matter






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






24. The arrangement of electrons in an atom






25. A ratio derived from the equality between two different units that can be used to convert from one unit to the other






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






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






28. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance


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






30. A positive ion.






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






32. 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.






33. Not having a uniform composition throughout






34. Having a uniform composition throughout






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






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






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






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






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






40. A testable statement






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






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






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






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






45. A measure of the amount of matter






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






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






48. A substance that reacts in a chemical change






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






50. Combination of all the forms of electromagnetic radiation.