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






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






3. Atoms that have lost or gained electrons






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






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






6. Subatomic particle without a charge; found in nucleus






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






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






9. Atoms that have lost or gained electrons






10. Indicates the formation of new substances from previous substances






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






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






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






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






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






16. Atoms that are held together by covalent bonds






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






18. Anything that occupies space and has mass






19. Occurs when atoms share electrons






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






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






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






23. Subatomic particle without a charge; found in nucleus






24. Indicates the formation of new substances from previous substances






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






26. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






38. Occurs when atoms share electrons






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






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






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






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






43. Occurs when atoms transfer electrons to other atoms






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






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






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






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






48. Atoms that are held together by covalent bonds






49. Anything that occupies space and has mass






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