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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 having the same numbers of protons but different numbers of neutrons






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






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






4. Indicates the formation of new substances from previous substances






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






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






7. Occurs when atoms transfer electrons to other atoms






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






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






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






11. Subatomic particle without a charge; found in nucleus






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






13. Anything that occupies space and has mass






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






15. Indicates the formation of new substances from previous substances






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






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






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






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






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






21. Anything that occupies space and has mass






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






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






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






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






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






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






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






29. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






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






40. Occurs when atoms transfer electrons to other atoms






41. Occurs when atoms share electrons






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






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






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






45. Atoms that have lost or gained electrons






46. Atoms that have lost or gained electrons






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






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






49. Occurs when atoms share electrons






50. Atoms that are held together by covalent bonds