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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 have lost or gained electrons






2. Atoms that are held together by covalent bonds






3. Indicates the formation of new substances from previous substances






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






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






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






7. Anything that occupies space and has mass






8. Subatomic particle without a charge; found in nucleus






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






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






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






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






13. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






25. Occurs when atoms transfer electrons to other atoms






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






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






28. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






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






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






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






40. Atoms that are held together by covalent bonds






41. Anything that occupies space and has mass






42. Subatomic particle without a charge; found in nucleus






43. Atoms that have lost or gained electrons






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






45. Indicates the formation of new substances from previous substances






46. Occurs when atoms share electrons






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






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






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






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