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






3. Occurs when atoms share electrons






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






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






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






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






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






9. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






21. Subatomic particle without a charge; found in nucleus






22. Atoms that have lost or gained electrons






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






24. Subatomic particle without a charge; found in nucleus






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






26. Atoms that are held together by covalent bonds






27. Indicates the formation of new substances from previous substances






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






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






30. Indicates the formation of new substances from previous substances






31. Occurs when atoms share electrons






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






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






34. Atoms that are held together by covalent bonds






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






36. Anything that occupies space and has mass






37. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






47. Anything that occupies space and has mass






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






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






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