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 formation of new substances from previous substances






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






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






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






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






6. Occurs when atoms transfer electrons to other atoms






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






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






9. Anything that occupies space and has mass






10. Atoms that are held together by covalent bonds






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






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






13. Anything that occupies space and has mass






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






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






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






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






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






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






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






21. Occurs when atoms share electrons






22. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






29. Occurs when atoms share electrons






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






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






32. Atoms that have lost or gained electrons






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






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






35. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






42. Subatomic particle without a charge; found in nucleus






43. Atoms that are held together by covalent bonds






44. Subatomic particle without a charge; found in nucleus






45. Atoms that have lost or gained electrons






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






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






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






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






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