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






2. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






10. Anything that occupies space and has mass






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






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






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






14. Atoms that have lost or gained electrons






15. Atoms that are held together by covalent bonds






16. Occurs when atoms transfer electrons to other atoms






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






18. Indicates the formation of new substances from previous substances






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






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






21. Anything that occupies space and has mass






22. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






34. Indicates the formation of new substances from previous substances






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






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






37. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






47. Subatomic particle without a charge; found in nucleus






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






49. Occurs when atoms share electrons






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