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. Anything that occupies space and has mass






2. Atoms that have lost or gained electrons






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






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






5. Occurs when atoms share electrons






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






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






8. Anything that occupies space and has mass






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






10. Indicates the formation of new substances from previous substances






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






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






13. Subatomic particle without a charge; found in nucleus






14. Atoms that are held together by covalent bonds






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






16. Occurs when atoms transfer electrons to other atoms






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






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






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






20. Occurs when atoms transfer electrons to other atoms






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






22. Occurs when atoms share electrons






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






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






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






26. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






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






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






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






41. Atoms that are held together by covalent bonds






42. Indicates the formation of new substances from previous substances






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






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






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






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






47. Subatomic particle without a charge; found in nucleus






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






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






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