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






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






3. Subatomic particle without a charge; found in nucleus






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






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






6. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






15. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






24. Atoms that have lost or gained electrons






25. Subatomic particle without a charge; found in nucleus






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






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






28. Atoms that are held together by covalent bonds






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






30. Occurs when atoms share electrons






31. Atoms that have lost or gained electrons






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






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






34. Occurs when atoms transfer electrons to other atoms






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






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






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






38. Anything that occupies space and has mass






39. Atoms that are held together by covalent bonds






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






41. Anything that occupies space and has mass






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






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






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






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






49. Indicates the formation of new substances from previous substances






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