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






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






3. Occurs when atoms transfer electrons to other atoms






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






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






6. Atoms that have lost or gained electrons






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






8. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






14. Occurs when atoms share electrons






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






16. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






26. Indicates the formation of new substances from previous substances






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






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






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






30. Indicates the formation of new substances from previous substances






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






32. Subatomic particle without a charge; found in nucleus






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






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






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






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






37. Anything that occupies space and has mass






38. Atoms that are held together by covalent bonds






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






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






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






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






43. Atoms that have lost or gained electrons






44. Subatomic particle without a charge; found in nucleus






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






46. Anything that occupies space and has mass






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






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






49. Occurs when atoms share electrons






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