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






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






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






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






6. Indicates the formation of new substances from previous substances






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






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






9. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






18. Atoms that are held together by covalent bonds






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






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






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






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






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






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






25. Atoms that are held together by covalent bonds






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






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






28. Subatomic particle without a charge; found in nucleus






29. Occurs when atoms transfer electrons to other atoms






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






31. Anything that occupies space and has mass






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






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






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






35. Subatomic particle without a charge; found in nucleus






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






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






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






39. Atoms that have lost or gained electrons






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






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






42. Occurs when atoms share electrons






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






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






45. Occurs when atoms transfer electrons to other atoms






46. Atoms that have lost or gained electrons






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






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






49. Anything that occupies space and has mass






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