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. Indicates the number and types of atoms in a molecule






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






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






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






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






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






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






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






9. Anything that occupies space and has mass






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






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






12. Anything that occupies space and has mass






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






14. Indicates the formation of new substances from previous substances






15. Occurs when atoms share electrons






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






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






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






19. Occurs when atoms transfer electrons to other atoms






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






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






22. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






32. Subatomic particle without a charge; found in nucleus






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






34. Atoms that are held together by covalent bonds






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






36. Atoms that are held together by covalent bonds






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






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






39. Occurs when atoms transfer electrons to other atoms






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






41. Atoms that have lost or gained electrons






42. Occurs when atoms share electrons






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






44. Subatomic particle without a charge; found in nucleus






45. Indicates the formation of new substances from previous substances






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






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






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






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






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