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






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






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






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






7. Indicates the formation of new substances from previous substances






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






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






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






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






12. Occurs when atoms share electrons






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






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






15. Atoms that have lost or gained electrons






16. Atoms that are held together by covalent bonds






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






18. Occurs when atoms transfer electrons to other atoms






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






20. Occurs when atoms share electrons






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






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






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






24. Anything that occupies space and has mass






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






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






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






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






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






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






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






32. Subatomic particle without a charge; found in nucleus






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






34. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






45. Atoms that are held together by covalent bonds






46. Subatomic particle without a charge; found in nucleus






47. Occurs when atoms transfer electrons to other atoms






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






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






50. Anything that occupies space and has mass