Test your basic knowledge |

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. 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






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






3. A substance that is formed by a chemical change






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






5. The amount of space occupied by an object






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






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






8. 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






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






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






11. Combination of all the forms of electromagnetic radiation.






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






13. Atoms of the same element that have different masses






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






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






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






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






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






19. A testable statement






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






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






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






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






24. A negative ion.






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






26. A short-range proton-neutron - proton-proton - or neutrorce that holds the nuclear particles together






27. Something that has magnitude - size - or amount






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






29. One wave per second.






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






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






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






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






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






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






36. Any substance that has a definite composition






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






38. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






40. A horizontal row of elements in the periodic table






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






42. Not having a uniform composition throughout






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






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






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






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






47. Lowest energy state of an atom.






48. Having a uniform composition throughout






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






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