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






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






3. Occurs when atoms share electrons






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






5. Atoms that are held together by covalent bonds






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






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






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






9. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






18. Subatomic particle without a charge; found in nucleus






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






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






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






22. Indicates the formation of new substances from previous substances






23. Atoms that are held together by covalent bonds






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






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






26. Occurs when atoms transfer electrons to other atoms






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






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






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






30. Atoms that have lost or gained electrons






31. Anything that occupies space and has mass






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






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






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






35. Indicates the formation of new substances from previous substances






36. Atoms that have lost or gained electrons






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






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






39. Subatomic particle without a charge; found in nucleus






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






41. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






49. Occurs when atoms share electrons






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