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






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






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






4. Occurs when atoms share electrons






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






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






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






8. Atoms that are held together by covalent bonds






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






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






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






12. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






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






24. Atoms that are held together by covalent bonds






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






26. Subatomic particle without a charge; found in nucleus






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






28. Subatomic particle without a charge; found in nucleus






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






30. Occurs when atoms transfer electrons to other atoms






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






32. Indicates the formation of new substances from previous substances






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






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






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






36. Anything that occupies space and has mass






37. Atoms that have lost or gained electrons






38. Occurs when atoms share electrons






39. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






47. Anything that occupies space and has mass






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






49. Occurs when atoms transfer electrons to other atoms






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