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 having the same numbers of protons but different numbers of neutrons






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






3. Atoms that have lost or gained electrons






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






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






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






7. Atoms that are held together by covalent bonds






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






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






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






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






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






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






14. Occurs when atoms share electrons






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






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






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






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






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






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






21. Atoms that have lost or gained electrons






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






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






24. Subatomic particle without a charge; found in nucleus






25. Atoms that are held together by covalent bonds






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






27. Anything that occupies space and has mass






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






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






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






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






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






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






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






35. Subatomic particle without a charge; found in nucleus






36. Anything that occupies space and has mass






37. Indicates the formation of new substances from previous substances






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






39. Indicates the formation of new substances from previous substances






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






41. Occurs when atoms share electrons






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






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






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






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






46. Occurs when atoms transfer electrons to other atoms






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






48. Occurs when atoms transfer electrons to other atoms






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






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