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






3. Occurs when atoms share electrons






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






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






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






7. Subatomic particle without a charge; found in nucleus






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






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






10. Indicates the formation of new substances from previous substances






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






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






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






14. Occurs when atoms transfer electrons to other atoms






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






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






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






18. Subatomic particle without a charge; found in nucleus






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






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






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






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






23. Indicates the formation of new substances from previous substances






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






25. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






33. Occurs when atoms transfer electrons to other atoms






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






35. Anything that occupies space and has mass






36. Occurs when atoms share electrons






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






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






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






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






41. Anything that occupies space and has mass






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






43. Atoms that have lost or gained electrons






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






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






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






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






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






49. Atoms that are held together by covalent bonds






50. Atoms that have lost or gained electrons