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






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






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






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






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






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






7. Indicates the formation of new substances from previous substances






8. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






15. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






23. Anything that occupies space and has mass






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






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






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






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






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






29. Occurs when atoms share electrons






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






31. Occurs when atoms transfer electrons to other atoms






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






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






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






35. Indicates the formation of new substances from previous substances






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






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






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






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






40. Atoms that have lost or gained electrons






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






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






43. Occurs when atoms share electrons






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






45. Atoms that are held together by covalent bonds






46. Subatomic particle without a charge; found in nucleus






47. Anything that occupies space and has mass






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






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






50. Atoms that are held together by covalent bonds