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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. Atoms that have lost or gained electrons






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






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






5. Anything that occupies space and has mass






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






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






8. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






16. Indicates the formation of new substances from previous substances






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






18. Indicates the formation of new substances from previous substances






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






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






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






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






23. Subatomic particle without a charge; found in nucleus






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






25. Subatomic particle without a charge; found in nucleus






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






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






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






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






30. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






40. Occurs when atoms share electrons






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






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






43. Anything that occupies space and has mass






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






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






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






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






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






49. Atoms that are held together by covalent bonds






50. Occurs when atoms share electrons