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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. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






8. Occurs when atoms share electrons






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






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






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






12. Anything that occupies space and has mass






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






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






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






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






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






18. Atoms that have lost or gained electrons






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






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






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






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






23. Indicates the formation of new substances from previous substances






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






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






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






27. Occurs when atoms share electrons






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






29. Occurs when atoms transfer electrons to other atoms






30. Occurs when atoms transfer electrons to other atoms






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






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






33. Atoms that are held together by covalent bonds






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






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






36. Indicates the formation of new substances from previous substances






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






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






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






40. Atoms that have lost or gained electrons






41. Subatomic particle without a charge; found in nucleus






42. Anything that occupies space and has mass






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






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






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






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






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






48. Atoms that are held together by covalent bonds






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






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