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






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






3. Occurs when atoms transfer electrons to other atoms






4. Atoms that are held together by covalent bonds






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






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






7. Indicates the formation of new substances from previous substances






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






9. Occurs when atoms share electrons






10. Subatomic particle without a charge; found in nucleus






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






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






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






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






15. Atoms that have lost or gained electrons






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






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






18. Atoms that are held together by covalent bonds






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






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






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






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






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






24. Anything that occupies space and has mass






25. Occurs when atoms share electrons






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






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






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






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






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






31. Subatomic particle without a charge; found in nucleus






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






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






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






35. Occurs when atoms transfer electrons to other atoms






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






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






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






39. Indicates the formation of new substances from previous substances






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






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






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






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






44. Atoms that have lost or gained electrons






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






46. Anything that occupies space and has mass






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






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






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






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