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






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






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






4. Atoms that have lost or gained electrons






5. Indicates the formation of new substances from previous substances






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






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






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






9. Subatomic particle without a charge; found in nucleus






10. Occurs when atoms transfer electrons to other atoms






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






12. Atoms that are held together by covalent bonds






13. Indicates the formation of new substances from previous substances






14. Subatomic particle without a charge; found in nucleus






15. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






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






28. Anything that occupies space and has mass






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






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






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






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






33. Occurs when atoms share electrons






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






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






36. Occurs when atoms share electrons






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






38. Anything that occupies space and has mass






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






40. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






48. Occurs when atoms transfer electrons to other atoms






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






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