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






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






3. Atoms that are held together by covalent bonds






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






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






6. Subatomic particle without a charge; found in nucleus






7. Atoms that are held together by covalent bonds






8. Anything that occupies space and has mass






9. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






18. Occurs when atoms transfer electrons to other atoms






19. Occurs when atoms transfer electrons to other atoms






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






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






22. Occurs when atoms share electrons






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






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






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






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






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






28. Anything that occupies space and has mass






29. Subatomic particle without a charge; found in nucleus






30. Occurs when atoms share electrons






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






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






33. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






43. Atoms that have lost or gained electrons






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






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






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






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






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






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