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






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






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






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






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






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






7. Distance between corresponding points on adjacent waves.






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






9. A testable statement






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






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






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






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






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






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






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






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






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






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






21. The general term for any isotope of any element






22. Not having a uniform composition throughout






23. A substance that reacts in a chemical change






24. The state of matter in which the substance has a definite volume but an indefinite shape






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






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






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






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 emission of a continuous range of frequencies of electromagnetic radiation.






30. Atoms of the same element that have different masses






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






32. The suborbitals of an atom. (S - P - D - F)






33. A horizontal row of elements in the periodic table






34. The mass of one mole of a pure substance






35. Having a uniform composition throughout






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






37. Anything that has mass and takes up space






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






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






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






41. 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.






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






43. A substance that is formed by a chemical change






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






45. 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






46. The measurement system accepted worldwide

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






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






49. A measure of the gravitational pull on matter






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