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. 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. 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






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






4. Combination of all the forms of electromagnetic radiation.






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






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






7. A horizontal row of elements in the periodic table






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






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






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






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






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






13. A testable statement






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






15. Lowest energy state of an atom.






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






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






18. Any substance that has a definite composition






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






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






21. Having a uniform composition throughout






22. A vertical column of the periodic table






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






24. Not having a uniform composition throughout






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






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






27. A substance that reacts in a chemical change






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






29. A negative ion.






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






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






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






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






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






35. The arrangement of electrons in an atom






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






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






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






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






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






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






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






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






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






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






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






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






48. The energy required to remove one electron from a neutral atom of an element.






49. 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






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