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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. Indicates the formation of new substances from previous substances






2. Subatomic particle without a charge; found in nucleus






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






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






5. Indicates the formation of new substances from previous substances






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






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






8. Atoms that have lost or gained electrons






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






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






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






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






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






14. Anything that occupies space and has mass






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






16. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






33. Occurs when atoms share electrons






34. Subatomic particle without a charge; found in nucleus






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






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






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






38. Occurs when atoms share electrons






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






40. Atoms that are held together by covalent bonds






41. Atoms that are held together by covalent bonds






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






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






44. Anything that occupies space and has mass






45. Atoms that have lost or gained electrons






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






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






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






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






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