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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. Indicates the number and types of atoms in a molecule






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






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






5. Atoms that are held together by covalent bonds






6. Indicates the formation of new substances from previous substances






7. Anything that occupies space and has mass






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






9. Anything that occupies space and has mass






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






11. Occurs when atoms share electrons






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






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






14. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






20. Subatomic particle without a charge; found in nucleus






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






22. Occurs when atoms share electrons






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






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






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






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






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






28. Atoms that have lost or gained electrons






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






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






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






32. Atoms that have lost or gained electrons






33. Atoms that are held together by covalent bonds






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






35. Indicates the formation of new substances from previous substances






36. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






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






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






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