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






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






3. Subatomic particle without a charge; found in nucleus






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






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






6. Occurs when atoms transfer electrons to other atoms






7. Anything that occupies space and has mass






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






9. Indicates the formation of new substances from previous substances






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






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






12. Atoms that have lost or gained electrons






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






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






15. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






23. Indicates the formation of new substances from previous substances






24. Anything that occupies space and has mass






25. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






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






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






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






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






38. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






44. Subatomic particle without a charge; found in nucleus






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






46. Atoms that are held together by covalent bonds






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






48. Occurs when atoms share electrons






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






50. Atoms that are held together by covalent bonds