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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. 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






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






3. The general term for any isotope of any element






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






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






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






7. Combination of all the forms of electromagnetic radiation.






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






9. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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






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






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






13. A positive ion.






14. A horizontal row of elements in the periodic table






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






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






17. A vertical column of the periodic table






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






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






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






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






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






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






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






25. Something that has magnitude - size - or amount






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






27. Distance between corresponding points on adjacent waves.






28. 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






29. The measurement system accepted worldwide

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






31. 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.






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






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






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






35. Atoms of the same element that have different masses






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






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






38. A vertical column of the periodic table






39. Narrow beam of the emitted light was shined through a prism - it was separated into four specific colors of the visible spectrum.






40. Not having a uniform composition throughout






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






42. The arrangement of electrons in an atom






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






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






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






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






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






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






49. A negative ion.






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