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. Occurs when atoms share electrons






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






3. Atoms that are held together by covalent bonds






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






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






6. Subatomic particle without a charge; found in nucleus






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






8. Occurs when atoms share electrons






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






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






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






12. Atoms that have lost or gained electrons






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






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






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






16. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






22. Atoms that have lost or gained electrons






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






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






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






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






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






28. Anything that occupies space and has mass






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






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






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






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






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






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






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






36. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






43. Indicates the formation of new substances from previous substances






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






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






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






47. Anything that occupies space and has mass






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






49. Occurs when atoms transfer electrons to other atoms






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