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






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






5. Subatomic particle without a charge; found in nucleus






6. Atoms that have lost or gained electrons






7. Occurs when atoms share electrons






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






9. Subatomic particle without a charge; found in nucleus






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






11. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






18. Atoms that are held together by covalent bonds






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






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






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






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






23. Indicates the formation of new substances from previous substances






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






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






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






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






28. Anything that occupies space and has mass






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






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






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






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






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






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






35. Atoms that are held together by covalent bonds






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






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






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






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






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






41. Occurs when atoms transfer electrons to other atoms






42. Anything that occupies space and has mass






43. Atoms that have lost or gained electrons






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






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






46. Occurs when atoms share electrons






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






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






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






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