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






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






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






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






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






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






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






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






10. Occurs when atoms share electrons






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






12. Subatomic particle without a charge; found in nucleus






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






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






15. Atoms that are held together by covalent bonds






16. Anything that occupies space and has mass






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






18. Occurs when atoms transfer electrons to other atoms






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






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






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






22. Atoms that have lost or gained electrons






23. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






30. Anything that occupies space and has mass






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






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






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






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






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






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






37. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






43. Occurs when atoms share electrons






44. Atoms that have lost or gained electrons






45. Atoms that are held together by covalent bonds






46. Indicates the formation of new substances from previous substances






47. Subatomic particle without a charge; found in nucleus






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






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






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