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. Anything that occupies space and has mass






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






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






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






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






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






7. Atoms that are held together by covalent bonds






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






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






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






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






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






13. Occurs when atoms transfer electrons to other atoms






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






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






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






17. Atoms that have lost or gained electrons






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






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






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






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






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






23. Indicates the formation of new substances from previous substances






24. Subatomic particle without a charge; found in nucleus






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






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






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






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






29. Occurs when atoms transfer electrons to other atoms






30. Subatomic particle without a charge; found in nucleus






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






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






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






34. Indicates the formation of new substances from previous substances






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






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






37. Occurs when atoms share electrons






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






39. Anything that occupies space and has mass






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






41. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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