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






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






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






4. Atoms that are held together by covalent bonds






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






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






7. Indicates the formation of new substances from previous substances






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






9. Occurs when atoms share electrons






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






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






12. Occurs when atoms share electrons






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






14. Subatomic particle without a charge; found in nucleus






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






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






17. Subatomic particle without a charge; found in nucleus






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






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






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






21. Indicates the formation of new substances from previous substances






22. Atoms that have lost or gained electrons






23. Occurs when atoms transfer electrons to other atoms






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






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






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






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






28. Anything that occupies space and has mass






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






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






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






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






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






34. Atoms that are held together by covalent bonds






35. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






46. Atoms that have lost or gained electrons






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






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






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






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