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






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






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






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






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






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






7. Anything that occupies space and has mass






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






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






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






11. Occurs when atoms transfer electrons to other atoms






12. Occurs when atoms share electrons






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






14. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






20. Atoms that are held together by covalent bonds






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






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






23. Atoms that have lost or gained electrons






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






25. Occurs when atoms share electrons






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






27. Indicates the formation of new substances from previous substances






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






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






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






31. Anything that occupies space and has mass






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






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






34. Subatomic particle without a charge; found in nucleus






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






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






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






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






39. Occurs when atoms transfer electrons to other atoms






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






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






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






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






44. Atoms that have lost or gained electrons






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






46. Atoms that are held together by covalent bonds






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






48. Indicates the formation of new substances from previous substances






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






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