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






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






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






4. Atoms that are held together by covalent bonds






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






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






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






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






9. Occurs when atoms transfer electrons to other atoms






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






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






12. Atoms that have lost or gained electrons






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






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






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






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






17. Indicates the formation of new substances from previous substances






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






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






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






21. Occurs when atoms transfer electrons to other atoms






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






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






24. Subatomic particle without a charge; found in nucleus






25. Occurs when atoms share electrons






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






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






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






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






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






31. Atoms that have lost or gained electrons






32. Atoms that are held together by covalent bonds






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






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






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






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






37. Anything that occupies space and has mass






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






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






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






41. Subatomic particle without a charge; found in nucleus






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






43. Occurs when atoms share electrons






44. Anything that occupies space and has mass






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






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






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






48. Indicates the formation of new substances from previous substances






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






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