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






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






4. Indicates the formation of new substances from previous substances






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






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






7. Atoms that have lost or gained electrons






8. Atoms that are held together by covalent bonds






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






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






11. Atoms that are held together by covalent bonds






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






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






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






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






16. Occurs when atoms transfer electrons to other atoms






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






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






19. Subatomic particle without a charge; found in nucleus






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






21. Anything that occupies space and has mass






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






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






24. Occurs when atoms share electrons






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






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






27. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






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






40. Subatomic particle without a charge; found in nucleus






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






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






43. Anything that occupies space and has mass






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






45. Indicates the formation of new substances from previous substances






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






47. Occurs when atoms share electrons






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






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






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