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






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






3. Atoms that have lost or gained electrons






4. Anything that occupies space and has mass






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






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






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






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






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






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






11. Occurs when atoms share electrons






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






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






14. Subatomic particle without a charge; found in nucleus






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






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






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






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






19. Anything that occupies space and has mass






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






21. Indicates the formation of new substances from previous substances






22. Indicates the formation of new substances from previous substances






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






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






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






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






27. Subatomic particle without a charge; found in nucleus






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






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






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






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






32. Atoms that are held together by covalent bonds






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






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






35. Occurs when atoms transfer electrons to other atoms






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






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






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






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






40. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






46. Occurs when atoms share electrons






47. Atoms that have lost or gained electrons






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






49. Atoms that are held together by covalent bonds






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