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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. Combination of all the forms of electromagnetic radiation.






2. The ratio of mass to volume or mass divided by volume






3. Lowest energy state of an atom.






4. 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






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






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






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






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






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






10. A measure of the amount of matter






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






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






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






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






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






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






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






18. One wave per second.






19. Not having a uniform composition throughout






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






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






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






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






24. The amount of space occupied by an object






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






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






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






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






29. 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






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






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






32. A substance that is formed by a chemical change






33. The mass of one mole of a pure substance






34. A vertical column of the periodic table






35. A vertical column of the periodic table






36. Anything that has mass and takes up space






37. The general term for any isotope of any element






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






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






40. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






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






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






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






47. The arrangement of electrons in an atom






48. Atoms of the same element that have different masses






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






50. A substance that reacts in a chemical change