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






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






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






4. Subatomic particle without a charge; found in nucleus






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






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






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






8. Atoms that are held together by covalent bonds






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






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






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






12. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






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






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






28. Occurs when atoms transfer electrons to other atoms






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






30. Atoms that are held together by covalent bonds






31. Occurs when atoms share electrons






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






33. Subatomic particle without a charge; found in nucleus






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






35. Occurs when atoms share electrons






36. Occurs when atoms transfer electrons to other atoms






37. Indicates the formation of new substances from previous substances






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






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






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






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






42. Indicates the formation of new substances from previous substances






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






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






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






46. Atoms that have lost or gained electrons






47. Anything that occupies space and has mass






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






49. Anything that occupies space and has mass






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