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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. Indicates the formation of new substances from previous substances






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






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






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






5. Atoms that are held together by covalent bonds






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






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






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






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






10. Atoms that have lost or gained electrons






11. Indicates the formation of new substances from previous substances






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






13. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






20. Occurs when atoms share electrons






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






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






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






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






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






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






27. Occurs when atoms transfer electrons to other atoms






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






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






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






31. Subatomic particle without a charge; found in nucleus






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






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






34. Anything that occupies space and has mass






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






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






37. Atoms that are held together by covalent bonds






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






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






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






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






42. Occurs when atoms transfer electrons to other atoms






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






44. Occurs when atoms share electrons






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






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






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






48. Atoms that have lost or gained electrons






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






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