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






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






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






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






6. Occurs when atoms share electrons






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






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






9. Atoms that have lost or gained electrons






10. Atoms that are held together by covalent bonds






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






12. Anything that occupies space and has mass






13. Occurs when atoms share electrons






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






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






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






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






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






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






20. Atoms that have lost or gained electrons






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






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






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






24. Subatomic particle without a charge; found in nucleus






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






26. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






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






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






39. Occurs when atoms transfer electrons to other atoms






40. Subatomic particle without a charge; found in nucleus






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






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






43. Occurs when atoms transfer electrons to other atoms






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






45. Indicates the formation of new substances from previous substances






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






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






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






49. Atoms that are held together by covalent bonds






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