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






3. Occurs when atoms transfer electrons to other atoms






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






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






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






7. Anything that occupies space and has mass






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






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






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






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






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






13. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






23. Atoms that have lost or gained electrons






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






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






26. Subatomic particle without a charge; found in nucleus






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






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






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






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






31. Occurs when atoms share electrons






32. Indicates the formation of new substances from previous substances






33. Atoms that are held together by covalent bonds






34. Anything that occupies space and has mass






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






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






37. Subatomic particle without a charge; found in nucleus






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






39. Occurs when atoms share electrons






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






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






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






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






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






45. Indicates the formation of new substances from previous substances






46. Atoms that are held together by covalent bonds






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






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






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






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