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






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






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






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






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






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






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






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






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






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






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






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






13. Occurs when atoms transfer electrons to other atoms






14. Atoms that have lost or gained electrons






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






16. Anything that occupies space and has mass






17. Occurs when atoms transfer electrons to other atoms






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






19. Subatomic particle without a charge; found in nucleus






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






21. Indicates the formation of new substances from previous substances






22. Atoms that are held together by covalent bonds






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






24. Subatomic particle without a charge; found in nucleus






25. Anything that occupies space and has mass






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






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






28. Indicates the formation of new substances from previous substances






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






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






31. Atoms that are held together by covalent bonds






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






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






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






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






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






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






38. Occurs when atoms share electrons






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






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






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






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






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






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






45. Atoms that have lost or gained electrons






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






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






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






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






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