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






3. Subatomic particle without a charge; found in nucleus






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






5. Anything that occupies space and has mass






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






7. Atoms that have lost or gained electrons






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






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






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






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






12. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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. Occurs when atoms transfer electrons to other atoms






25. Subatomic particle without a charge; found in nucleus






26. Atoms that have lost or gained electrons






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






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






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






30. Atoms that are held together by covalent bonds






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






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






33. Occurs when atoms transfer electrons to other atoms






34. Anything that occupies space and has mass






35. Occurs when atoms share electrons






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






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






38. Atoms that are held together by covalent bonds






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






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






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






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






43. Occurs when atoms share electrons






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






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






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






47. Indicates the formation of new substances from previous substances






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






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






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