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. Atoms that have lost or gained electrons






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






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






5. Occurs when atoms share electrons






6. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






13. Indicates the formation of new substances from previous substances






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






15. Occurs when atoms transfer electrons to other atoms






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






17. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






24. Occurs when atoms share electrons






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






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






27. Atoms that are held together by covalent bonds






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






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






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






31. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






40. Atoms that are held together by covalent bonds






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






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






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






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






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






46. Indicates the formation of new substances from previous substances






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






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






49. Anything that occupies space and has mass






50. Subatomic particle without a charge; found in nucleus