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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. Atoms that have lost or gained electrons






3. Indicates the formation of new substances from previous substances






4. Occurs when atoms transfer electrons to other atoms






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






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






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






8. Subatomic particle without a charge; found in nucleus






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






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






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






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






13. Atoms that are held together by covalent bonds






14. Indicates the formation of new substances from previous substances






15. Subatomic particle without a charge; found in nucleus






16. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






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






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






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






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






29. Occurs when atoms share electrons






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






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






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






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






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






35. Anything that occupies space and has mass






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






37. Atoms that have lost or gained electrons






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






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






40. Anything that occupies space and has mass






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






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






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






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






45. Atoms that are held together by covalent bonds






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






47. Occurs when atoms transfer electrons to other atoms






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






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






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