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. Subatomic particle having a positive charge; found in nucleus






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






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






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






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






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






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






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






9. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






18. Subatomic particle without a charge; found in nucleus






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






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






21. Atoms that are held together by covalent bonds






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






23. Anything that occupies space and has mass






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






25. Occurs when atoms transfer electrons to other atoms






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






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






28. Anything that occupies space and has mass






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






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






31. Occurs when atoms transfer electrons to other atoms






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






33. Atoms that have lost or gained electrons






34. Occurs when atoms share electrons






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






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






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






38. Indicates the formation of new substances from previous substances






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






40. Subatomic particle without a charge; found in nucleus






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






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






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






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






45. Indicates the formation of new substances from previous substances






46. Atoms that are held together by covalent bonds






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






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






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






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