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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. Indicates the number and types of atoms in a molecule






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






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






4. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






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






17. Atoms that have lost or gained electrons






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






19. Occurs when atoms share electrons






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






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






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






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






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






25. Subatomic particle without a charge; found in nucleus






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






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






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






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






30. Occurs when atoms transfer electrons to other atoms






31. Atoms that are held together by covalent bonds






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






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






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






35. Anything that occupies space and has mass






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






37. Anything that occupies space and has mass






38. Subatomic particle without a charge; found in nucleus






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






40. Indicates the formation of new substances from previous substances






41. Atoms that have lost or gained electrons






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






43. Atoms that are held together by covalent bonds






44. Indicates the formation of new substances from previous substances






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






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






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






48. Occurs when atoms share electrons






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






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