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






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






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






4. Anything that occupies space and has mass






5. Atoms that are held together by covalent bonds






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






7. Indicates the formation of new substances from previous substances






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






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






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






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






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






13. Subatomic particle without a charge; found in nucleus






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






15. Atoms that have lost or gained electrons






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






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






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






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






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






21. Occurs when atoms transfer electrons to other atoms






22. Occurs when atoms share electrons






23. Occurs when atoms transfer electrons to other atoms






24. Occurs when atoms share electrons






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






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






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






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






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






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






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






36. Indicates the formation of new substances from previous substances






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






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






39. Atoms that have lost or gained electrons






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






41. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






50. Anything that occupies space and has mass