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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 & one being carbon






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






3. Indicates the formation of new substances from previous substances






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






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






6. Anything that occupies space and has mass






7. Atoms that are held together by covalent bonds






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






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






10. Occurs when atoms share electrons






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






12. Indicates the formation of new substances from previous substances






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






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






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






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






17. Occurs when atoms transfer electrons to other atoms






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






19. Anything that occupies space and has mass






20. Atoms that are held together by covalent bonds






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






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






23. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






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






33. Atoms that have lost or gained electrons






34. Subatomic particle without a charge; found in nucleus






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






36. Occurs when atoms transfer electrons to other atoms






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






38. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






50. Subatomic particle without a charge; found in nucleus