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






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






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






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






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






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






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






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






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






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






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






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






14. Occurs when atoms transfer electrons to other atoms






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






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






17. Occurs when atoms share electrons






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






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






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






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






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






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






24. Anything that occupies space and has mass






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






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






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






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






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






30. Occurs when atoms transfer electrons to other atoms






31. Occurs when atoms share electrons






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






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






34. Indicates the formation of new substances from previous substances






35. Indicates the formation of new substances from previous substances






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






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






38. Atoms that have lost or gained electrons






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






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






41. Atoms that have lost or gained electrons






42. Subatomic particle without a charge; found in nucleus






43. Atoms that are held together by covalent bonds






44. Anything that occupies space and has mass






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






46. Atoms that are held together by covalent bonds






47. Subatomic particle without a charge; found in nucleus






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






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






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






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