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. Atoms that have lost or gained electrons






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






3. Occurs when atoms transfer electrons to other atoms






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






5. Occurs when atoms transfer electrons to other atoms






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






7. Indicates the formation of new substances from previous substances






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






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






10. Subatomic particle without a charge; found in nucleus






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






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






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






14. Atoms that are held together by covalent bonds






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






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






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






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






19. Subatomic particle without a charge; found in nucleus






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






21. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






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






31. Indicates the formation of new substances from previous substances






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






33. Anything that occupies space and has mass






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






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






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






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






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






39. Atoms that are held together by covalent bonds






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






41. Atoms that have lost or gained electrons






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






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






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






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






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






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






48. Occurs when atoms share electrons






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






50. Anything that occupies space and has mass