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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. Subatomic particle without a charge; found in nucleus






3. Occurs when atoms share electrons






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






5. Anything that occupies space and has mass






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






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






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






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






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






11. Subatomic particle without a charge; found in nucleus






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






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






14. Occurs when atoms share electrons






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






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






17. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






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






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






30. Occurs when atoms transfer electrons to other atoms






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






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






33. Anything that occupies space and has mass






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






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






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






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






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






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






40. Atoms that have lost or gained electrons






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






42. Atoms that have lost or gained electrons






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






44. Indicates the formation of new substances from previous substances






45. Occurs when atoms transfer electrons to other atoms






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






47. Atoms that are held together by covalent bonds






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






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






50. Atoms that are held together by covalent bonds