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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. Indicates the number and types of atoms in a molecule






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






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






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






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






6. Occurs when atoms transfer electrons to other atoms






7. Anything that occupies space and has mass






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






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






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






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






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






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






14. Atoms that are held together by covalent bonds






15. Atoms that have lost or gained electrons






16. Indicates the formation of new substances from previous substances






17. Occurs when atoms transfer electrons to other atoms






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






19. Anything that occupies space and has mass






20. Indicates the formation of new substances from previous substances






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






22. Subatomic particle without a charge; found in nucleus






23. Occurs when atoms share electrons






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






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






26. Atoms that are held together by covalent bonds






27. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






36. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






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






46. Atoms that have lost or gained electrons






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






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






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






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