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






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






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






4. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






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






16. Atoms that are held together by covalent bonds






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






18. Anything that occupies space and has mass






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






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






21. Occurs when atoms share electrons






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






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






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






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






26. Subatomic particle without a charge; found in nucleus






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






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






29. Occurs when atoms transfer electrons to other atoms






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






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






32. Subatomic particle without a charge; found in nucleus






33. Occurs when atoms share electrons






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






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






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






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






38. Atoms that have lost or gained electrons






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






40. Atoms that are held together by covalent bonds






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






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






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






44. Occurs when atoms transfer electrons to other atoms






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






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






47. Indicates the formation of new substances from previous substances






48. Anything that occupies space and has mass






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






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