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






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






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






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






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






7. Indicates the formation of new substances from previous substances






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






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






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






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






12. Atoms that are held together by covalent bonds






13. Anything that occupies space and has mass






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






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






16. Indicates the formation of new substances from previous substances






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






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






19. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






29. Subatomic particle without a charge; found in nucleus






30. Occurs when atoms share electrons






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






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






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






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






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






36. Occurs when atoms share electrons






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






38. Atoms that have lost or gained electrons






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






40. Anything that occupies space and has mass






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






42. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






49. Atoms that are held together by covalent bonds






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