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 containing two or more elements chemically combined in a fixed ratio






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






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






4. Subatomic particle without a charge; found in nucleus






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






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






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






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






9. Occurs when atoms transfer electrons to other atoms






10. Subatomic particle without a charge; found in nucleus






11. Anything that occupies space and has mass






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






13. Atoms that are held together by covalent bonds






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






15. Atoms that have lost or gained electrons






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






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






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






19. Atoms that have lost or gained electrons






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






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






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






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






24. Occurs when atoms share electrons






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






26. Indicates the formation of new substances from previous substances






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






28. Anything that occupies space and has mass






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






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






31. Occurs when atoms share electrons






32. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






48. Indicates the formation of new substances from previous substances






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






50. Occurs when atoms transfer electrons to other atoms