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. Occurs when atoms share electrons






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






3. Subatomic particle without a charge; found in nucleus






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






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. Atoms that are held together by covalent bonds






8. Atoms that are held together by covalent bonds






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






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






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






12. Occurs when atoms transfer electrons to other atoms






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






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






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






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






17. Anything that occupies space and has mass






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






19. Occurs when atoms transfer electrons to other atoms






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






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






22. Occurs when atoms share electrons






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






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






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






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






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






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






29. Atoms that have lost or gained electrons






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






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






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






33. Subatomic particle without a charge; found in nucleus






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






35. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






44. Indicates the formation of new substances from previous substances






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






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






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






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






49. Indicates the formation of new substances from previous substances






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