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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. Atoms that are held together by covalent bonds






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






3. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






9. Occurs when atoms share electrons






10. Subatomic particle without a charge; found in nucleus






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






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






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






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






15. Anything that occupies space and has mass






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






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






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






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






20. Anything that occupies space and has mass






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






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






23. Indicates the formation of new substances from previous substances






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






25. Atoms that are held together by covalent bonds






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






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






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






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






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






31. Occurs when atoms transfer electrons to other atoms






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






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






34. Occurs when atoms share electrons






35. Atoms that have lost or gained electrons






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






37. Atoms that have lost or gained electrons






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






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






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






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






42. Subatomic particle without a charge; found in nucleus






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






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






45. Indicates the formation of new substances from previous substances






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






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






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






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






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