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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. Atoms that are held together by covalent bonds






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






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






5. Atoms that have lost or gained electrons






6. Indicates the formation of new substances from previous substances






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






8. Anything that occupies space and has mass






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






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






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






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






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






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






15. Subatomic particle without a charge; found in nucleus






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






17. Anything that occupies space and has mass






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






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






20. Subatomic particle without a charge; found in nucleus






21. Occurs when atoms transfer electrons to other atoms






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






23. Atoms that have lost or gained electrons






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






25. Occurs when atoms transfer electrons to other atoms






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






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






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






29. Occurs when atoms share electrons






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






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






32. Occurs when atoms share electrons






33. Atoms that are held together by covalent bonds






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






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






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






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






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






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






40. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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