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 are held together by covalent bonds






2. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






11. Occurs when atoms transfer electrons to other atoms






12. Subatomic particle without a charge; found in nucleus






13. Occurs when atoms share electrons






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






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






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






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






18. Occurs when atoms share electrons






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






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






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






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






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






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






25. Atoms that are held together by covalent bonds






26. Indicates the formation of new substances from previous substances






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






28. Atoms that have lost or gained electrons






29. Anything that occupies space and has mass






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






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






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






33. Occurs when atoms transfer electrons to other atoms






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






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






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






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






38. Anything that occupies space and has mass






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






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






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






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






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






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






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






46. Indicates the formation of new substances from previous substances






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






48. Atoms that have lost or gained electrons






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






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