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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. Occurs when atoms transfer electrons to other atoms






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






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






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






5. Atoms that have lost or gained electrons






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






7. Atoms that are held together by covalent bonds






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






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






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






11. Occurs when atoms transfer electrons to other atoms






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






13. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






21. Atoms that are held together by covalent bonds






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






23. Subatomic particle without a charge; found in nucleus






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






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






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






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






28. Anything that occupies space and has mass






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






30. Occurs when atoms share electrons






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






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






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






34. Occurs when atoms share electrons






35. Atoms that have lost or gained electrons






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






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






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






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






40. Anything that occupies space and has mass






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






42. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






48. Indicates the formation of new substances from previous substances






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






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