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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 having a positive charge; found in nucleus






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






4. Occurs when atoms share electrons






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






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






7. Anything that occupies space and has mass






8. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






24. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






32. Atoms that are held together by covalent bonds






33. Subatomic particle without a charge; found in nucleus






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






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






36. Atoms that are held together by covalent bonds






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






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






39. Indicates the formation of new substances from previous substances






40. Subatomic particle without a charge; found in nucleus






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






42. Indicates the formation of new substances from previous substances






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






44. Occurs when atoms transfer electrons to other atoms






45. Atoms that have lost or gained electrons






46. Anything that occupies space and has mass






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






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






49. Occurs when atoms share electrons






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