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






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






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






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






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






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






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






8. Distance between corresponding points on adjacent waves.






9. One wave per second.






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






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






12. Combination of all the forms of electromagnetic radiation.






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






14. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation






15. A positive ion.






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






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






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






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






20. A testable statement






21. An explanation of how phenomena occur and how data or events are related






22. Atoms of the same element that have different masses






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






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






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






26. The amount of space occupied by an object






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






28. A measure of the amount of matter






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






30. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






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






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






34. A vertical column of the periodic table






35. 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






36. A horizontal row of elements in the periodic table






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






38. Two quantities that have a constant mathematical product






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






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






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






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






43. Having a uniform composition throughout






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






45. A measure of the gravitational pull on matter






46. A substance that is formed by a chemical change






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






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






49. Lowest energy state of an atom.






50. Which suborbital. (Py - Px - Pz)