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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. Atoms that are held together by covalent bonds






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






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






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






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






6. Atoms that are held together by covalent bonds






7. Anything that occupies space and has mass






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






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






10. Occurs when atoms share electrons






11. Occurs when atoms transfer electrons to other atoms






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






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






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






15. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






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






25. Occurs when atoms transfer electrons to other atoms






26. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






35. Indicates the formation of new substances from previous substances






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






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






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






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






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






44. Subatomic particle without a charge; found in nucleus






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






46. Anything that occupies space and has mass






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






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






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






50. Indicates the formation of new substances from previous substances