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






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






3. Atoms that have lost or gained electrons






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






5. Subatomic particle without a charge; found in nucleus






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






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






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






9. Atoms that are held together by covalent bonds






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






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






12. Atoms that have lost or gained electrons






13. Indicates the formation of new substances from previous substances






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






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






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






17. Atoms that are held together by covalent bonds






18. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






24. Occurs when atoms share electrons






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






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






27. Subatomic particle without a charge; found in nucleus






28. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






37. Occurs when atoms share electrons






38. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






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






50. Occurs when atoms transfer electrons to other atoms