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






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






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






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






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






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






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






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






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






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






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






13. Indicates the formation of new substances from previous substances






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






15. Occurs when atoms share electrons






16. Atoms that have lost or gained electrons






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






18. Occurs when atoms transfer electrons to other atoms






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






20. Subatomic particle without a charge; found in nucleus






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






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






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






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






25. Atoms that are held together by covalent bonds






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






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






28. Occurs when atoms share electrons






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






30. Anything that occupies space and has mass






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






32. Atoms that are held together by covalent bonds






33. Indicates the formation of new substances from previous substances






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






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






36. Atoms that have lost or gained electrons






37. Anything that occupies space and has mass






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






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






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






41. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






49. Subatomic particle without a charge; found in nucleus






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