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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 without a charge; found in nucleus






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






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






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






5. Anything that occupies space and has mass






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






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






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






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






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






11. Occurs when atoms transfer electrons to other atoms






12. Anything that occupies space and has mass






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






14. Indicates the formation of new substances from previous substances






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






16. Atoms that have lost or gained electrons






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






18. Atoms that are held together by covalent bonds






19. Occurs when atoms share electrons






20. Indicates the formation of new substances from previous substances






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






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






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






24. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






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






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






36. Atoms that have lost or gained electrons






37. Occurs when atoms share electrons






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






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






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






41. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






50. Atoms that are held together by covalent bonds