Test your basic knowledge |

Basic Chemistry

Subjects : science, chemistry
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. Protons and neutrons together; make up the center of an atom






2. Ending materials of a reaction; found on right side of chemical equation






3. Atoms having the same numbers of protons but different numbers of neutrons






4. Atoms that are held together by covalent bonds






5. The starting materials for a reaction; found on left side of chemical equation






6. Substance made of two or more elements & none of which is carbon






7. Atoms that are held together by covalent bonds






8. Protons and neutrons together; make up the center of an atom






9. The starting materials for a reaction; found on left side of chemical equation






10. Anything that occupies space and has mass






11. Atoms having the same numbers of protons but different numbers of neutrons






12. Substance made of two or more elements & one being carbon






13. Occurs when atoms transfer electrons to other atoms






14. Shows the number and types of atoms in a molecule and how they are arranged






15. Indicates the number and types of atoms in a molecule






16. Occurs when atoms transfer electrons to other atoms






17. Anything that occupies space and has mass






18. Subatomic particle without a charge; found in nucleus






19. A pure substance that cannot be broken down into other substances by chemical reactions






20. Electrons in the outermost energy level; they are involved in bond formation






21. A pure substance that cannot be broken down into other substances by chemical reactions






22. Subatomic particle having a positive charge; found in nucleus






23. Indicates the formation of new substances from previous substances






24. A covalent bond in which one pair of electrons is shared






25. Substance containing two or more elements chemically combined in a fixed ratio






26. Substance made of two or more elements & none of which is carbon






27. Interaction of substances that lead to the formation of new substances






28. Interaction of substances that lead to the formation of new substances






29. Atoms that have lost or gained electrons






30. Subatomic particle without a charge; found in nucleus






31. Subatomic particle having a positive charge; found in nucleus






32. Identifies a specific element; equals the number of protons in an atom of each element






33. Shows the number and types of atoms in a molecule and how they are arranged






34. Occurs when atoms share electrons






35. Atoms that have lost or gained electrons






36. Indicates the number and types of atoms in a molecule






37. Identifies a specific element; equals the number of protons in an atom of each element






38. Subatomic particle having a negative charge; not in nucleus but surrounds it






39. The smallest particle of an element that retains the properties of the element






40. Substance containing two or more elements chemically combined in a fixed ratio






41. A covalent bond in which four valence electrons are shared between two atoms






42. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy






43. Electrons in the outermost energy level; they are involved in bond formation






44. A covalent bond in which one pair of electrons is shared






45. Subatomic particle having a negative charge; not in nucleus but surrounds it






46. Ending materials of a reaction; found on right side of chemical equation






47. Occurs when atoms share electrons






48. Substance made of two or more elements & one being carbon






49. Indicates the formation of new substances from previous substances






50. The smallest particle of an element that retains the properties of the element