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






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






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






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






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






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






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






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






10. Anything that occupies space and has mass






11. Subatomic particle without a charge; found in nucleus






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






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






14. Anything that occupies space and has mass






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






16. Indicates the formation of new substances from previous substances






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






18. Occurs when atoms transfer electrons to other atoms






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






20. Indicates the formation of new substances from previous substances






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






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






23. Subatomic particle without a charge; found in nucleus






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






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






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






27. Atoms that have lost or gained electrons






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






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






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






31. Atoms that have lost or gained electrons






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






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






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






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






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






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






38. Occurs when atoms transfer electrons to other atoms






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






40. Atoms that are held together by covalent bonds






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






42. Occurs when atoms share electrons






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






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






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






46. Atoms that are held together by covalent bonds






47. Occurs when atoms share electrons






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






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






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