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






3. Anything that occupies space and has mass






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






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






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






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






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






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






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






11. Subatomic particle without a charge; found in nucleus






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






13. Occurs when atoms share electrons






14. Occurs when atoms share electrons






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






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






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






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






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 number and types of atoms in a molecule






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






23. Anything that occupies space and has mass






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






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






26. Occurs when atoms transfer electrons to other atoms






27. Occurs when atoms transfer electrons to other atoms






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






29. Atoms that have lost or gained electrons






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






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






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






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






34. Atoms that are held together by covalent bonds






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






36. Indicates the formation of new substances from previous substances






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






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






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






40. Atoms that are held together by covalent bonds






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






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






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






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






45. Indicates the formation of new substances from previous substances






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






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






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






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






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