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






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






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






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






5. Anything that occupies space and has mass






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






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






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






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






10. Indicates the formation of new substances from previous substances






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






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






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






14. Occurs when atoms transfer electrons to other atoms






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






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






17. Subatomic particle without a charge; found in nucleus






18. Anything that occupies space and has mass






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






20. Subatomic particle without a charge; found in nucleus






21. Occurs when atoms transfer electrons to other atoms






22. Atoms that are held together by covalent bonds






23. Indicates the formation of new substances from previous substances






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






25. Atoms that have lost or gained electrons






26. Occurs when atoms share electrons






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






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






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






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






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






32. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






40. Occurs when atoms share electrons






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






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






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






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






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






46. Atoms that are held together by covalent bonds






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






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






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






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