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






2. Occurs when atoms share electrons






3. Occurs when atoms share electrons






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






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






6. Anything that occupies space and has mass






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






8. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






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






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






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






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






22. Atoms that have lost or gained electrons






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






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






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






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






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






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






29. Subatomic particle without a charge; found in nucleus






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






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






32. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






40. Subatomic particle without a charge; found in nucleus






41. Atoms that are held together by covalent bonds






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






43. Occurs when atoms transfer electrons to other atoms






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






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






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






47. Atoms that have lost or gained electrons






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






49. Anything that occupies space and has mass






50. Indicates the formation of new substances from previous substances