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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 substance that reacts in a chemical change






2. A positive ion.






3. Something that has magnitude - size - or amount






4. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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






6. The elements of group 2 of the periodic table.






7. 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






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






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






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






11. Anything that has mass and takes up space






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






13. Any substance that has a definite composition






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






15. A horizontal row of elements in the periodic table






16. Not having a uniform composition throughout






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






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






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






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






21. A measure of the gravitational pull on matter






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






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






24. Atoms of the same element that have different masses






25. A testable statement






26. Two quantities that have a constant mathematical product






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






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






29. 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






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






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






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






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






34. A substance that is formed by a chemical change






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






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






37. One wave per second.






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






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






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






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






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






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






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






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






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






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






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






49. 1/2 the distance between the nuclei of identical atoms that are bonded together.






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







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Can you answer 50 questions in 15 minutes?


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