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






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






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






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






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






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






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






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






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






10. Atoms that are held together by covalent bonds






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






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






13. Atoms that have lost or gained electrons






14. Occurs when atoms share electrons






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






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






17. Occurs when atoms transfer electrons to other atoms






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






19. Indicates the formation of new substances from previous substances






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






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






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






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






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






25. Subatomic particle without a charge; found in nucleus






26. Indicates the formation of new substances from previous substances






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






28. Atoms that have lost or gained electrons






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






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






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






32. Anything that occupies space and has mass






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






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






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






36. Atoms that are held together by covalent bonds






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






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






39. Occurs when atoms share electrons






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






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






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






45. Subatomic particle without a charge; found in nucleus






46. Anything that occupies space and has mass






47. Occurs when atoms transfer electrons to other atoms






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






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






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