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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 four valence electrons are shared between two atoms






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






3. Atoms that are held together by covalent bonds






4. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






11. Atoms that have lost or gained electrons






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






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






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






15. Occurs when atoms share electrons






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






17. Anything that occupies space and has mass






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






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






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






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






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






23. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






31. Atoms that have lost or gained electrons






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






33. Indicates the formation of new substances from previous substances






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






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






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






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






38. Indicates the formation of new substances from previous substances






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






40. Subatomic particle without a charge; found in nucleus






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






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






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






44. Subatomic particle without a charge; found in nucleus






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






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






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






48. Occurs when atoms share electrons






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






50. Atoms that are held together by covalent bonds