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






2. Anything that occupies space and has mass






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






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






5. Atoms that are held together by covalent bonds






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






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






8. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






16. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






27. Occurs when atoms share electrons






28. Indicates the formation of new substances from previous substances






29. Atoms that are held together by covalent bonds






30. Atoms that have lost or gained electrons






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






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






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






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






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






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






37. Anything that occupies space and has mass






38. Atoms that have lost or gained electrons






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






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






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






42. Occurs when atoms transfer electrons to other atoms






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






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






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






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






47. Occurs when atoms transfer electrons to other atoms






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






49. Subatomic particle without a charge; found in nucleus






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