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






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






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






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






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






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






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






8. Occurs when atoms transfer electrons to other atoms






9. Occurs when atoms share electrons






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






11. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






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






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






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






24. Indicates the formation of new substances from previous substances






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






26. Atoms that are held together by covalent bonds






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






28. Subatomic particle without a charge; found in nucleus






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






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






31. Indicates the formation of new substances from previous substances






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






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






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






35. Atoms that have lost or gained electrons






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






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






38. Atoms that have lost or gained electrons






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






40. Occurs when atoms share electrons






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






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






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






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






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






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






47. Anything that occupies space and has mass






48. Anything that occupies space and has mass






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






50. Occurs when atoms transfer electrons to other atoms