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






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






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






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






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






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






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






8. Atoms that are held together by covalent bonds






9. Atoms that have lost or gained electrons






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






11. Occurs when atoms transfer electrons to other atoms






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






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






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






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






16. Occurs when atoms share electrons






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






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






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






20. Occurs when atoms transfer electrons to other atoms






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






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






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






24. Subatomic particle without a charge; found in nucleus






25. Occurs when atoms share electrons






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






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






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






29. Subatomic particle without a charge; found in nucleus






30. Atoms that have lost or gained electrons






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






32. Indicates the formation of new substances from previous substances






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






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






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






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






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






38. Anything that occupies space and has mass






39. Indicates the formation of new substances from previous substances






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






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






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






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






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






45. Anything that occupies space and has mass






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






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






48. Atoms that are held together by covalent bonds






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






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