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






3. Atoms that are held together by covalent bonds






4. Occurs when atoms share electrons






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






6. Subatomic particle without a charge; found in nucleus






7. Occurs when atoms share electrons






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






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






10. Atoms that have lost or gained electrons






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






12. Anything that occupies space and has mass






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






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






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






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






17. Indicates the formation of new substances from previous substances






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






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






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






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






22. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






32. Indicates the formation of new substances from previous substances






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






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






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






36. Occurs when atoms transfer electrons to other atoms






37. Occurs when atoms transfer electrons to other atoms






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






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






40. Subatomic particle without a charge; found in nucleus






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






42. Anything that occupies space and has mass






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






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






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






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






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






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






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






50. Atoms that are held together by covalent bonds