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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. Atoms that have lost or gained electrons






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






3. Occurs when atoms transfer electrons to other atoms






4. Occurs when atoms share electrons






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






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






7. Subatomic particle without a charge; found in nucleus






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






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






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






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






12. Indicates the formation of new substances from previous substances






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






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






15. Anything that occupies space and has mass






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






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






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






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






20. Atoms that are held together by covalent bonds






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






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






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






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






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






26. Indicates the formation of new substances from previous substances






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






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






29. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






37. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






47. Occurs when atoms share electrons






48. Anything that occupies space and has mass






49. Occurs when atoms transfer electrons to other atoms






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